Question

Bettina's age is three times Melvina's. If 20 is added to Melvina's age and 20 is subtracted from Bettina's, their ages will be equal. How old is each now?

Answer 1

B = 3M--------------(1)

And, M+20 = B-20

or, B- M=40

or, 3M -M= 40------ from (1)

or, 2M= 40

or, M = 20

And, B= 3M= 3 * 20 = 60