Bryan is 6 times as old as Adam now.
In 12 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 8 years ago?
|
Bryan |
Adam |
Total |
Now |
6 u |
1 u |
7 u |
Change |
+ 12 |
+ 12 |
+ 24 |
12 years later |
6 u + 12 |
1 u + 12 |
80 |
(a)
Total age of Bryan and Adam now
= 80 - 24
= 56
Now
Bryan's age = 6 u
Adam's age = 1 u
Total age of Bryan and Adam = 7 u
7 u = 56
1 u = 56 ÷ 7 = 8
Adam's age now
= 1 u
= 8
(b)
Number of years that Adam is younger than Bryan
= 6 u - 1 u
= 5 u
= 5 x 8
= 40
(c)
Bryan's age 8 years' ago
= 6 u - 8
= 6 x 8 - 8
= 48 - 8
= 40
Answer(s): (a) 8; (b) 40; (c) 40