Question

Mary is 2 and 1/2 times as old as Jane. In 30 years' time, the sum of their ages will be 95 years. How old is Mary now?

Answer 1

Step-by step explanation:

Trial and error.

Start with 30 because of the additional 30 years.

95-30= 75

75/ 2.5 = 30

So Mary is 30