Adam is 6 times as old as Bryan now.
In 15 years time, their total age is 100 years.
How old is Adam now?
- How old is Bryan now?
- How many years is Bryan younger than Adam?
- How old was Adam 26 years ago?
|
Adam |
Bryan |
Total |
Now |
6 u |
1 u |
7 u |
Change |
+ 15 |
+ 15 |
+ 30 |
15 years later |
6 u + 15 |
1 u + 15 |
100 |
(a)
Total age of Adam and Bryan now
= 100 - 30
= 70
Now
Adam's age = 6 u
Bryan's age = 1 u
Total age of Adam and Bryan = 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Bryan's age now
= 1 u
= 10
(b)
Number of years that Bryan is younger than Adam
= 6 u - 1 u
= 5 u
= 5 x 10
= 50
(c)
Adam's age 26 years' ago
= 6 u - 26
= 6 x 10 - 26
= 60 - 26
= 34
Answer(s): (a) 10; (b) 50; (c) 34