Lee is
g years old. Valen is six times as old as Lee and Ivan is 15 years younger than Valen.
- Express Ivan's age in terms of g.
- Lee is 9 years old as of now. ln how many years' time will Ivan be 3 times as old as Lee?
(a)
Lee's age =
g years
Valen's age = 6
g years
Ivan's age = (6
g - 15) years
(b)
g = 9
Difference in age remains unchanged.
Difference in age between Ivan and Lee
= (6
g - 15) -
g = 6
g -
g - 15
= 5
g - 15
= 5 x 9 - 15
= 30 years
Difference in the age when Ivan will be 3 times as old as Lee
= 3 u - 1 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Number of years' time so Ivan will be 3 times as old as Lee
= 15 - 9
= 6 years
Answer(s): (a) (6
g - 15) years; (b) 6 years
