Question

Required
11. 20 children are seated on a few
benches. There are equal number of
children on each bench. If there are 5
benches, how many children are
seated on each bench?​

Answer 1

Answer:

Let the number of students = y

let the number of benches = x

from the first statement

y = 4x - 12 (three empty benches * 4 students)

from the second statement

y = 3x +3

Substituting equation 2 into equation 1

3x + 3 = 4x - 12

rearranging

x = 15

Substituting the value for x in equation 2

y = 3* 15 + 3 = 48