Bryan is 2 times as old as Adam now.
In 8 years time, their total age is 70 years.
How old is Bryan now?
- How old is Adam now?
- How many years is Adam younger than Bryan?
- How old was Bryan 7 years ago?
|
Bryan |
Adam |
Total |
Now |
2 u |
1 u |
3 u |
Change |
+ 8 |
+ 8 |
+ 16 |
8 years later |
2 u + 8 |
1 u + 8 |
70 |
(a)
Total age of Bryan and Adam now
= 70 - 16
= 54
Now
Bryan's age = 2 u
Adam's age = 1 u
Total age of Bryan and Adam = 3 u
3 u = 54
1 u = 54 ÷ 3 = 18
Adam's age now
= 1 u
= 18
(b)
Number of years that Adam is younger than Bryan
= 2 u - 1 u
= 1 u
= 1 x 18
= 18
(c)
Bryan's age 7 years' ago
= 2 u - 7
= 2 x 18 - 7
= 36 - 7
= 29
Answer(s): (a) 18; (b) 18; (c) 29