Paul is
w years old. Warren is six times as old as Paul and Mark is 9 years younger than Warren.
- Express Mark's age in terms of w.
- Paul is 7 years old as of now. ln how many years' time will Mark be 3 times as old as Paul?
(a)
Paul's age =
w years
Warren's age = 6
w years
Mark's age = (6
w - 9) years
(b)
w = 7
Difference in age remains unchanged.
Difference in age between Mark and Paul
= (6
w - 9) -
w = 6
w -
w - 9
= 5
w - 9
= 5 x 7 - 9
= 26 years
Difference in the age when Mark will be 3 times as old as Paul
= 3 u - 1 u
= 2 u
2 u = 26
1 u = 26 ÷ 2 = 13
Number of years' time so Mark will be 3 times as old as Paul
= 13 - 7
= 6 years
Answer(s): (a) (6
w - 9) years; (b) 6 years
