Question

6. The ratio of the number of boys to the number of girls in a school with 840 students was 7:5. In the new
session, the number of boys increased by 20 and the ratio of boys to girls changed to 6:5. Calculate the
number of new girls.
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Answer 1

Answer:

Step-by-step explanation:

Here, ratio of boys to girls is 7:5

and, no. of girls = 840

let no. of girls be 5x and no. of boys 12x ,

Therefore,

=> 5x = 840

=> x = 840/5

=> x = 168

So, no. of boys = 12x = 12(168) = 2,016

So, no. of boys in the school = 2,016

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