Question

70% of students in a school are boys.if the no. of girls are 240
how many boys are there​

Answer 1

Answer:

Number of boys = 560

Step-by-step explanation:

70% of students = boys.

It means, 30% of students = girls.

Number of girls = 240.

30% = 240

1% = (240 * 100)/30

    = (24000)/30

    = 800

Then,

70% = (800 * 70)/100

       = 560

Therefore, number of boys = 560

Hope it helps!