Adam is 6 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 11 years ago?
|
Adam |
Bryan |
Total |
Now |
6 u |
1 u |
7 u |
Change |
+ 9 |
+ 9 |
+ 18 |
9 years later |
6 u + 9 |
1 u + 9 |
60 |
(a)
Total age of Adam and Bryan now
= 60 - 18
= 42
Now
Adam's age = 6 u
Bryan's age = 1 u
Total age of Adam and Bryan = 7 u
7 u = 42
1 u = 42 ÷ 7 = 6
Bryan's age now
= 1 u
= 6
(b)
Number of years that Bryan is younger than Adam
= 6 u - 1 u
= 5 u
= 5 x 6
= 30
(c)
Adam's age 11 years' ago
= 6 u - 11
= 6 x 6 - 11
= 36 - 11
= 25
Answer(s): (a) 6; (b) 30; (c) 25