Glen is
g years old. Oscar is five times as old as Glen and Albert is 10 years younger than Oscar.
- Express Albert's age in terms of g.
- Glen is 10 years old as of now. ln how many years' time will Albert be 3 times as old as Glen?
(a)
Glen's age =
g years
Oscar's age = 5
g years
Albert's age = (5
g - 10) years
(b)
g = 10
Difference in age remains unchanged.
Difference in age between Albert and Glen
= (5
g - 10) -
g = 5
g -
g - 10
= 4
g - 10
= 4 x 10 - 10
= 30 years
Difference in the age when Albert will be 3 times as old as Glen
= 3 u - 1 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Number of years' time so Albert will be 3 times as old as Glen
= 15 - 10
= 5 years
Answer(s): (a) (5
g - 10) years; (b) 5 years
