Question

Jane and Jean want to sign up for a Mathematics competition and are required to write down their ages. The ratio of Jane's age to Jean's age is 5 : 6. In 12 years' time, their total age will be 57. What is Jane's age 20 years from now?

Answer 1

jane age : jean age = 5:6

sum = 5+6 = 11

Their toal age after 12 years = 57

Let us find jane's and jean's age after 12 years =

Jane's age = 5/11 * 57 = 25.99...

Jean's age = 6/11 *57 = 31.99.....

jane age after 12 years is = 25 years 9 months

jean age after 12 years is = 31 years 9 months

Janes age now = 25 .9 - 12yrs = 13.9 years

janes age after 20 years = 13.9 +20 = 33 years

ANSWER = 33 years