1. ## Dividing ratios.

A question has come up on a mock exam and i'm not sure if i have done it correctly so please can you tell me if i have done it wrong or if it is right?

Peter and Margaret's ages are in the ratio 4:5. If Peter is 16 years old, how old is Margaret?

Peter = 4/9
so 1/9 is 16 divided by 4 = 4
4 x 5 = 20
Margaret is 20.

2. you have the right answer

3. Originally Posted by mollyx
A question has come up on a mock exam and i'm not sure if i have done it correctly so please can you tell me if i have done it wrong or if it is right?

Peter and Margaret's ages are in the ratio 4:5. If Peter is 16 years old, how old is Margaret?

Peter = 4/9
so 1/9 is 16 divided by 4 = 4
4 x 5 = 20
Margaret is 20.

$4:5=16:?$