Ahmad is
x years old. Bobby is six times as old as Ahmad and Oliver is 4 years younger than Bobby.
- Express Oliver's age in terms of x.
- Ahmad is 5 years old as of now. ln how many years' time will Oliver be 4 times as old as Ahmad?
(a)
Ahmad's age =
x years
Bobby's age = 6
x years
Oliver's age = (6
x - 4) years
(b)
x = 5
Difference in age remains unchanged.
Difference in age between Oliver and Ahmad
= (6
x - 4) -
x = 6
x -
x - 4
= 5
x - 4
= 5 x 5 - 4
= 21 years
Difference in the age when Oliver will be 4 times as old as Ahmad
= 4 u - 1 u
= 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Number of years' time so Oliver will be 4 times as old as Ahmad
= 7 - 5
= 2 years
Answer(s): (a) (6
x - 4) years; (b) 2 years