Albert is
m years old. Owen is four times as old as Albert and Charlie is 4 years younger than Owen.
- Express Charlie's age in terms of m.
- Albert is 8 years old as of now. ln how many years' time will Charlie be 3 times as old as Albert?
(a)
Albert's age =
m years
Owen's age = 4
m years
Charlie's age = (4
m - 4) years
(b)
m = 8
Difference in age remains unchanged.
Difference in age between Charlie and Albert
= (4
m - 4) -
m = 4
m -
m - 4
= 3
m - 4
= 3 x 8 - 4
= 20 years
Difference in the age when Charlie will be 3 times as old as Albert
= 3 u - 1 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Number of years' time so Charlie will be 3 times as old as Albert
= 10 - 8
= 2 years
Answer(s): (a) (4
m - 4) years; (b) 2 years
