Adam is 2 times as old as Bryan now.
In 2 years time, their total age is 100 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 |
+ 2 |
+ 2 |
+ 4 |
2 years later |
2 u + 2 |
1 u + 2 |
100 |
(a)
Total age of Adam and Bryan now
= 100 - 4
= 96
Now
Adam's age = 2 u
Bryan's age = 1 u
Total age of Adam and Bryan = 3 u
3 u = 96
1 u = 96 ÷ 3 = 32
Bryan's age now
= 1 u
= 32
(b)
Number of years that Bryan is younger than Adam
= 2 u - 1 u
= 1 u
= 1 x 32
= 32
(c)
Adam's age 12 years' ago
= 2 u - 12
= 2 x 32 - 12
= 64 - 12
= 52
Answer(s): (a) 32; (b) 32; (c) 52