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Study the following graph and the table and answer the question given below. (Data of different states regarding population of states in the year 2018)

If in the year 2018, population of $F$ is increased by $10\%$ and population of $B$ is increased by $12\%$  as compared to the previous year, then _________ is the ratio of populations of $F$ and $B$ in 2017.

  1. $42:55$
  2. $62:55$
  3. $42:11$
  4. $44:5$
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F increased by 10%  to become 15 % of total ( 3276000 x15 /100 = 491400 )

so in 2017 it was  =491400/1.1=446727 approx

B increased by 12% to become  20 % of total ( 3276000 x20 /100 = 655200 )

so in 2017 it was  =655200/1.12=585000

so ratio of F and B in 2017 = 446727/585000= 0.7636 (approx)

option A   42/55 =0.7636 is correct ans 

 

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