Bryan is 7 times as old as Adam now.
In 26 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 25 years ago?
|
Bryan |
Adam |
Total |
Now |
7 u |
1 u |
8 u |
Change |
+ 26 |
+ 26 |
+ 52 |
26 years later |
7 u + 26 |
1 u + 26 |
100 |
(a)
Total age of Bryan and Adam now
= 100 - 52
= 48
Now
Bryan's age = 7 u
Adam's age = 1 u
Total age of Bryan and Adam = 8 u
8 u = 48
1 u = 48 ÷ 8 = 6
Adam's age now
= 1 u
= 6
(b)
Number of years that Adam is younger than Bryan
= 7 u - 1 u
= 6 u
= 6 x 6
= 36
(c)
Bryan's age 25 years' ago
= 7 u - 25
= 7 x 6 - 25
= 42 - 25
= 17
Answer(s): (a) 6; (b) 36; (c) 17