Question

40%of the students of a class are girls if there are 6 less girls than boys how many students are these in the class

Answer 1

I hope it clarifies your doubt

Answer 2

B=60n/100 :::G=40n/100:::B-6=G
:::>B-6=40N/100   :::>20n=600 :::>n=30
30 students present

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