Perry is
a years old. Lui is five times as old as Perry and Jenson is 12 years younger than Lui.
- Express Jenson's age in terms of a.
- Perry is 10 years old as of now. ln how many years' time will Jenson be 3 times as old as Perry?
(a)
Perry's age =
a years
Lui's age = 5
a years
Jenson's age = (5
a - 12) years
(b)
a = 10
Difference in age remains unchanged.
Difference in age between Jenson and Perry
= (5
a - 12) -
a = 5
a -
a - 12
= 4
a - 12
= 4 x 10 - 12
= 28 years
Difference in the age when Jenson will be 3 times as old as Perry
= 3 u - 1 u
= 2 u
2 u = 28
1 u = 28 ÷ 2 = 14
Number of years' time so Jenson will be 3 times as old as Perry
= 14 - 10
= 4 years
Answer(s): (a) (5
a - 12) years; (b) 4 years
