Question

the strength of students in a school when increased by 8% becomes 2160. find the original strength of students in the school.

Answer 1

1987.2

Explanation:

We can write a proportion to find the total amount in the choir using the information given. A proportion is two equivalent ratios set equal to each other. Since we know the strength of students increased by 8% to 2160 then the original was 92%.

`(92)/(100)=(y)/(2160)`

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.

92(2160)=100(y)

198720=100y

y=1987.2

There are 1987.2 as the original strength of students.