Question

In 1980, Elaine was 8 times as old as Adam, and Judy was 3 times as old as Adam. Elaine is 20 years older than Judy. How old was Adam in 1988?

Answer 1

12 yrs. old

Answer 2

in 1980;
>elaine=8*adam.........(1)
>judy=3*adam...........(2)
>elaine=judy+20........(3)
>solve (1),(2),(3) , gives adam =5 years then after 8 years he will be 13

Answer 3

the above equations give adam = 4 years and hence, 12 yrs. in 1988