Question

the ages of two students are in the ratio of 3:5,if the older is 40yrs. How old is the younger student​

Answer 1

The ratio/proportion is young / old = young / old.

We know that one ratio is 3 / 5, so we need to complete the other.

3 / 5 = young / 40

5 goes into 40, 8 times, therefore we need to multiply the numerator by 8 also.

3 x 8 = 24

The younger student is 24 years old.

Hope this helps!

Answer 2

24

Explanation:

younger : older

3 :5

The older is 40

40/5 = 8

Multiply each by 8

younger : older

3 *8 :5 *8

24 : 40

The younger is 24