Bryan is 7 times as old as Adam now.
In 4 years time, their total age is 40 years.
How old is Bryan now?
- How old is Adam now?
- How many years is Adam younger than Bryan?
- How old was Bryan 1 years ago?
|
Bryan |
Adam |
Total |
Now |
7 u |
1 u |
8 u |
Change |
+ 4 |
+ 4 |
+ 8 |
4 years later |
7 u + 4 |
1 u + 4 |
40 |
(a)
Total age of Bryan and Adam now
= 40 - 8
= 32
Now
Bryan's age = 7 u
Adam's age = 1 u
Total age of Bryan and Adam = 8 u
8 u = 32
1 u = 32 ÷ 8 = 4
Adam's age now
= 1 u
= 4
(b)
Number of years that Adam is younger than Bryan
= 7 u - 1 u
= 6 u
= 6 x 4
= 24
(c)
Bryan's age 1 years' ago
= 7 u - 1
= 7 x 4 - 1
= 28 - 1
= 27
Answer(s): (a) 4; (b) 24; (c) 27