Question

If 70% of the students in a school are boys and the number of girls is 540, find the number of boys in the school

Answer 1

If 70 percent are boys then 30 percent are girls

Thats is 30 percent of total equals 540

Let total be x

30/100 × x = 540

x= 540 × 100/30

× =1800


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Answer 2

Let the total number of students be x
Girls= 30%= 540
30/100*x=540
x=1800
The no. of boys = 1800 - 540
                          = 1260