Rael is
h years old. Glen is six times as old as Rael and Sean is 4 years younger than Glen.
- Express Sean's age in terms of h.
- Rael is 8 years old as of now. ln how many years' time will Sean be 4 times as old as Rael?
(a)
Rael's age =
h years
Glen's age = 6
h years
Sean's age = (6
h - 4) years
(b)
h = 8
Difference in age remains unchanged.
Difference in age between Sean and Rael
= (6
h - 4) -
h = 6
h -
h - 4
= 5
h - 4
= 5 x 8 - 4
= 36 years
Difference in the age when Sean will be 4 times as old as Rael
= 4 u - 1 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Number of years' time so Sean will be 4 times as old as Rael
= 12 - 8
= 4 years
Answer(s): (a) (6
h - 4) years; (b) 4 years
