Bryan is 3 times as old as Adam now.
In 2 years time, their total age is 80 years.
How old is Bryan now?
- How old is Adam now?
- How many years is Adam younger than Bryan?
- How old was Bryan 11 years ago?
|
Bryan |
Adam |
Total |
Now |
3 u |
1 u |
4 u |
Change |
+ 2 |
+ 2 |
+ 4 |
2 years later |
3 u + 2 |
1 u + 2 |
80 |
(a)
Total age of Bryan and Adam now
= 80 - 4
= 76
Now
Bryan's age = 3 u
Adam's age = 1 u
Total age of Bryan and Adam = 4 u
4 u = 76
1 u = 76 ÷ 4 = 19
Adam's age now
= 1 u
= 19
(b)
Number of years that Adam is younger than Bryan
= 3 u - 1 u
= 2 u
= 2 x 19
= 38
(c)
Bryan's age 11 years' ago
= 3 u - 11
= 3 x 19 - 11
= 57 - 11
= 46
Answer(s): (a) 19; (b) 38; (c) 46