Question

In class 10 ,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 are there in the class?

Answer 1

4x+ 20 / 3x -12 =2/1
4x+20 =6x-24
2x=44
x=22
so 4×22 =88
3×22=66
88+66=154

Answer 2

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