Adam is 2 times as old as Bryan now.
In 9 years time, their total age is 60 years.
How old is Adam now?
- How old is Bryan now?
- How many years is Bryan younger than Adam?
- How old was Adam 12 years ago?
|
Adam |
Bryan |
Total |
Now |
2 u |
1 u |
3 u |
Change |
+ 9 |
+ 9 |
+ 18 |
9 years later |
2 u + 9 |
1 u + 9 |
60 |
(a)
Total age of Adam and Bryan now
= 60 - 18
= 42
Now
Adam's age = 2 u
Bryan's age = 1 u
Total age of Adam and Bryan = 3 u
3 u = 42
1 u = 42 ÷ 3 = 14
Bryan's age now
= 1 u
= 14
(b)
Number of years that Bryan is younger than Adam
= 2 u - 1 u
= 1 u
= 1 x 14
= 14
(c)
Adam's age 12 years' ago
= 2 u - 12
= 2 x 14 - 12
= 28 - 12
= 16
Answer(s): (a) 14; (b) 14; (c) 16