Question

in class x of a school the ratio of the number of boys to that of the girls is 4:3 if there were 20 more boys and 12 less girls then the ratio would have been 2:1 how many students were there in the class​

Answer 1

Answer:

Let the number of boys be 4x and girls be 3x

Given

3x−12

4x+20

=

1

2

4x+20=6x−24

2x=44

x=22

So number of boys =88

Number of girls =66

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Answer 2

Answer:

Let the no. of boys be 4x and 3x.

4x+20/3x-12=2/1

4x+20=6x-24

24+20=6x-4x

44=2x

x=22

Thus the number of boys=4×22=88

no. of girls in the class=3×22=66