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In Medical certificate, by mistake a candidate gave his height as 25% more than normal. In the interview panel,he  clarified his height was 5 feet 5inches. Find the percentage correction made by the candidate from his stated height to his actual height.

  1. 20
  2. 28.56
  3. 25
  4. None of these

2 Answers

Best answer
2 votes
2 votes

Method 1

$1$ feet = $12$ inches

So $5$ feet $5$ inches = $65$ inches.

So $65$ inches is the actual height of the candidate.

Height which he wrote on certificate = $65$ + ($25\%$ of $65$) = $65+16.25 = 81.25$ inches.

So $Percentage\ correction$

$=  \frac{Wrong\ height - Actual\ Height}{Actual\ height} * 100 $

$= \frac{81.25 - 65}{65} *100 $

$= \frac{16.25}{65} *100 $

$= 25\% $


Method 2

the original height was $5$ feet $5$ inches

But he increased his height by $25\%$ and wrote in the certificate.

So what will he do to make it correct ?

Decrease the height by $25\%$ which is written in the certificate.

So option 3. $25$ is correct answer.

 

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Actual height =5 feet 5 inches =5×12 inches +5 inches =65 inches
Height given by mistake =125100×65 inches =81.25 inches
 Required percentage error =(81.2565)81.25×100%

=(16.2581.25×100)%
=20%

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