Question

In a company the ratio of male staff to female staff is 7:5. The number of male staff is 140. Find the number of female staff

Answer 1

since the ratio is 7:5
the no of females are
7:5
140:?
?=140*5/7
=20*5=100
hence there are 100 females in the company
hope this helps

Answer 2

Given: Ratio of male staff to female staff is 7:5 and the number of male staff is 140.

To find: The number of female staff.

Answer:

Let us it as 7x and 5x.

Since male staff is 7x (given), and the number is 140, 7x = 140.

x = 140/7

x = 20

Now that we know the value of x, we will substitute this value in 5x.

5x = 5*20 = 100

Therefore the number of female staff is 100.

Proof: Male to female = 140:100

Simplified form: 7:5

Hope it helps :)