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Recent questions tagged work-time

0 votes
1 answer
1
Water pours into a rectangular tank of $20\:metres$ depth which was initially half-filled. The rate at which the height of the water rises is inversely proportional to the height of the water at that instant. If the height of the water after an hour is observed to be $12\:metres$, how much time, in hours, will be required to fill up the tank? $\frac{75}{11}$ $\frac{125}{11}$ $\frac{25}{3}$ $5$
asked Sep 18, 2019 in Numerical Ability gatecse 59 views
1 vote
2 answers
2
3 votes
3 answers
3
An oil tank can be filled by pipe $X$ in $5$ hours and pipe $Y$ in $4$ hours, each pump working on its own. When the oil tank is full and the drainage hole is open, the oil is drained in $20$ hours. If initially the tank was empty and someone started the two pups together ... take for the tank to be filled? (Assume that the rate of drainage is independent of the Head) $1.50$ $2.00$ $2.50$ $4.00$
asked Feb 12, 2019 in Numerical Ability Arjun 406 views
3 votes
3 answers
4
It would take one machine $4$ hours to complete a production order and another machine $2$ hours to complete the same order. If both machines work simultaneously at their respective constant rates, the time taken to complete the same order is ________ hours. $2/3$ $3/4$ $4/3$ $7/3$
asked Feb 12, 2019 in Numerical Ability Arjun 758 views
2 votes
3 answers
5
It takes two hours for a person $X$ to mow the lawn. $Y$ can mow the same lawn in four hours. How long (in minutes) will it take $X$ and $Y,$ if they work together to mow the lawn$?$ $60$ $80$ $90$ $120$
asked Feb 12, 2019 in Numerical Ability Arjun 326 views
2 votes
3 answers
6
Two pipes $P$ and $Q$ can fill a tank in $6$ hours and $9$ hours respectively, while a third pipe $R$ can empty the tank in $12$ hours. Initially, $P$ and $R$ are open for $4$ hours, Then $P$ is closed and $Q$ is opened. After $6$ more hours $R$ is closed. The total time taken to fill the tank (in hours) is ____ $13.50$ $14.50$ $15.50$ $16.50$
asked Feb 9, 2019 in Numerical Ability Arjun 869 views
0 votes
0 answers
7
Chandan and Falguni work on alternate days; Chandan working on the 1st day, Falguni on the 2nd, then Chandan again on the 3rd followed by Falguni on the 4th and so on. In this way, they can finish the work in 25 days. The work done by Chandan varies every day and on any ... days but my doubt is here asked is number of days so shouldn't we fill(answer) 55 instead of 54.25 as days cant be in decimal
asked Feb 1, 2019 in Numerical Ability Mayank Bansal 257 views
1 vote
2 answers
8
Three identical inlet pipes were opened at 6:00 AM to fill up an empty container. At 8:30 AM, 2 identical pipes (having different rate from existing pipe's rate) are also opened. At 9:30 AM, it still required 1 more hour for all these pipes to fill up ... which were added at 8:30 AM can individually fill up the empty container in 40 hours, then the capacity of the container is ____________ m3.
asked Jan 18, 2019 in Numerical Ability Shankar Kakde 297 views
0 votes
0 answers
9
i have seen it's solution by equation method can any one explain it how to do this problem with any other method which would be easy
asked Oct 27, 2018 in Verbal Ability Shivani gaikawad 58 views
0 votes
1 answer
10
$A$ is $50\%$ as efficient as $B$. $C$ does half of the work done by $A$ and $B$ together.If $C$ alone does the work in $40$ days, then $A, B,$ & $C$ together can do the work in $13\dfrac{1}{3}$ days $15$ days $20$ days $30$ days
asked Jun 3, 2018 in Numerical Ability Nancy Pareta 168 views
0 votes
2 answers
11
A mason can complete a brick wall of size $10 \text{ ft.}$ high, $15 \text{ ft }$ wide using $9 \text{ inches}$ bricks in $3 \text{ days}$. How long will be take to make $4$ walls of size $10 \text{ ft}$ high, $5 \text{ ft}$ wide using $9 \text{ inches}$ bricks?
asked May 21, 2018 in Numerical Ability Dhanraj vishwakarma 185 views
0 votes
1 answer
12
Two machine $M1$ and $M2$ are able to execute any of four jobs $P,Q,R$ and $S$. The machines can perform one job on one object at a time. Jobs $P,Q,R$ and $S$ take $30$ minutes, $20$ minutes, $60$ minutes and $15$ minutes each respectively. There are $10$ objects each ... Job $S$ on $4$ objects. What is the minimum time needed to complete all the jobs? $2$ hours $2.5$ hours $3$ hours $3.5$ hours
asked Mar 26, 2018 in Numerical Ability Milicevic3306 168 views
0 votes
2 answers
13
$A$ does half as much work as $B$ in three-fourths of the time. If together they take $18$ days to complete a work, how much time shall $A$ & $B$ take to do it individually ?
asked Feb 19, 2018 in Numerical Ability Dhanraj vishwakarma 256 views
0 votes
1 answer
14
A contract is to be completed in 52 days and 125 identical robots were employed, each operational for 7 hours a day. After 39 days, five-seventh of the work was completed. How many additional robots would be required to complete the work on time, if each robot is now operational for 8 hours a day? 50 89 146 175
asked Feb 17, 2018 in Numerical Ability Arjun 1.1k views
2 votes
3 answers
15
Seven machines take $7$ minutes to make $7$ identical toys. At the same rate, how many minutes would it take for $100$ machine to make $100$ toys? $1$ $7$ $100$ $700$
asked Feb 17, 2018 in Numerical Ability Arjun 544 views
1 vote
2 answers
16
The distance from your home to your office is $4$ kilometers and your normal walking speed is $4$ Km/hr. On the first day, you walk at your normal walking speed and take time $T_1$ to reach office. On the second day, you walk at a speed of $3$ Km/hr from $2$ Kilometers, and at a speed of $5$ Km/hr for the ... $T_{1}>T_{3}$ $T_{1}=T_{2}$ and $T_{1}<T_{3}$ $T_{1}<T_{2}$ and $T_{1}=T_{3}$
asked Dec 10, 2017 in Others Arjun 229 views
0 votes
2 answers
17
$1200$ men and $500$ women can build a bridge in $2$ weeks. $900$ men and $250$ women will take $3$ weeks to build the same bridge. How many men will be needed to build the bridge in one week? $3000$ $3300$ $3600$ $3900$
asked Nov 23, 2017 in Numerical Ability admin 205 views
0 votes
1 answer
18
Two pipes A and B can fill tank in 10 and 20 min respectively.if both pipes are opened simultaneously ,after how many minutes should pipe B be closed so that the tank is full in 8 min? Ans: 4 min
asked Jun 14, 2017 in Verbal Ability akankshadewangan24 153 views
0 votes
3 answers
19
$X$ bullocks and $Y$ tractors take $8$ days to plough a field. If we have half the number of bullocks and double the number of tractors, it takes $5$ days to plough the same field. How many days will it take $X$ bullocks alone to plough the field? $30$ $35$ $40$ $45$
asked Feb 27, 2017 in Numerical Ability Arjun 475 views
10 votes
4 answers
20
Ananth takes $6$ hours and Bharath takes $4$ hours to read a book. Both started reading copies of the book at the same time. After how many hours is the number of pages to be read by Ananth, twice that to be read by Bharath? Assume Ananth and Bharath read all the pages with constant pace. $1$ $2$ $3$ $4$
asked Jan 25, 2017 in Numerical Ability makhdoom ghaya 3.3k views
5 votes
4 answers
21
S, M, E and F are working in shifts in a team to finish a project. M works with twice the efficiency of others but for half as many days as E worked. S and M have $6$ hour shifts in a day, whereas E and F have $12$ hours shifts. What is the ratio of contribution of M to contribution of E in the project? $1:1$ $1:2$ $1:4$ $2:1$
asked Jan 21, 2017 in Numerical Ability makhdoom ghaya 1.5k views
4 votes
1 answer
22
P, Q, R and S are working on a project. Q can finish the task in $25$ days, working alone for $12$ hours a day. R can finish the task in $50$ days, working alone for $12$ hours per day. Q worked $12$ ... . What is the ratio of work done by Q and R after $7$ days from the start of the project? $10:11$ $11:10$ $20:21$ $21:20$
asked Jan 20, 2017 in Numerical Ability makhdoom ghaya 1.8k views
0 votes
1 answer
23
If 9 engines consume 24 metric of coal , when each is working a 8 hours a day ; how much coal will required for 8 engines each running 13 hours a day it is been given that 3 engines of former type consume 4 engines of latter type ?
asked Mar 21, 2016 in Numerical Ability priti 189 views
5 votes
4 answers
24
Atul does half as much work as Anshu in $\dfrac 4 5$ of the time. If together they take $16$ days to complete the work, how many days shall Anshu take to do it? 23 25 26 30
asked Jan 10, 2016 in Numerical Ability bahirNaik 1.3k views
10 votes
3 answers
25
$5$ skilled workers can build a wall in $20$ days; $8$ semi-skilled workers can build a wall in $25$ days; $10$ unskilled workers can build a wall in $30$ days. If a team has $2$ skilled, $6$ semi-skilled and $5$ unskilled workers, how long it will take to build the wall? $20$ days $18$ days $16$ days $15$ days
asked Sep 30, 2014 in Numerical Ability jothee 2.8k views
18 votes
5 answers
26
A transporter receives the same number of orders each day. Currently, he has some pending orders (backlog) to be shipped. If he uses $7$ trucks, then at the end of the $4^{th}$ day he can clear all the orders. Alternatively, if he uses only $3$ trucks, then all the orders are ... minimum number of trucks required so that there will be no pending order at the end of $5^{th}$ day? $4$ $5$ $6$ $7$
asked Sep 29, 2014 in Numerical Ability jothee 4.2k views
10 votes
3 answers
27
The current erection cost of a structure is Rs. 13,200. If the labour wages per day increase by 1/5 of the current wages and the working hours decrease by 1/24 of the current period, then the new cost of erection in Rs. is 16,500 15,180 11,000 10,120
asked Sep 24, 2014 in Numerical Ability Arjun 3.6k views
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