Bryan is 3 times as old as Adam now.
In 22 years time, their total age is 100 years.
How old is Bryan now?
- How old is Adam now?
- How many years is Adam younger than Bryan?
- How old was Bryan 37 years ago?
|
Bryan |
Adam |
Total |
Now |
3 u |
1 u |
4 u |
Change |
+ 22 |
+ 22 |
+ 44 |
22 years later |
3 u + 22 |
1 u + 22 |
100 |
(a)
Total age of Bryan and Adam now
= 100 - 44
= 56
Now
Bryan's age = 3 u
Adam's age = 1 u
Total age of Bryan and Adam = 4 u
4 u = 56
1 u = 56 ÷ 4 = 14
Adam's age now
= 1 u
= 14
(b)
Number of years that Adam is younger than Bryan
= 3 u - 1 u
= 2 u
= 2 x 14
= 28
(c)
Bryan's age 37 years' ago
= 3 u - 37
= 3 x 14 - 37
= 42 - 37
= 5
Answer(s): (a) 14; (b) 28; (c) 5