Question

2. In a class of 60 students, 45% are girls. Find the number of boys in the class.
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Answer 1

Total student =60

Total student =60% of girls =45%

Total student =60% of girls =45%No. of boy =?

Total student =60% of girls =45%No. of boy =?No. of girls =60× 45/100

100= 6 × 45/10

=27 girls

=27 girlsNo. of boys = Total students - No. of girls =60−27=33 boys

Answer 2

Explanation:

let the boys be x

ATQ

x+45/100=60

100x+45/100=60

100x=6000-45

100x=5955

x=5955/100

x=5.955