Warren is
m years old. Lee is six times as old as Warren and Daniel is 7 years younger than Lee.
- Express Daniel's age in terms of m.
- Warren is 7 years old as of now. ln how many years' time will Daniel be 3 times as old as Warren?
(a)
Warren's age =
m years
Lee's age = 6
m years
Daniel's age = (6
m - 7) years
(b)
m = 7
Difference in age remains unchanged.
Difference in age between Daniel and Warren
= (6
m - 7) -
m = 6
m -
m - 7
= 5
m - 7
= 5 x 7 - 7
= 28 years
Difference in the age when Daniel will be 3 times as old as Warren
= 3 u - 1 u
= 2 u
2 u = 28
1 u = 28 ÷ 2 = 14
Number of years' time so Daniel will be 3 times as old as Warren
= 14 - 7
= 7 years
Answer(s): (a) (6
m - 7) years; (b) 7 years
