Adam is 2 times as old as Bryan now.
In 7 years time, their total age is 80 years.
How old is Adam now?
- How old is Bryan now?
- How many years is Bryan younger than Adam?
- How old was Adam 14 years ago?
|
Adam |
Bryan |
Total |
Now |
2 u |
1 u |
3 u |
Change |
+ 7 |
+ 7 |
+ 14 |
7 years later |
2 u + 7 |
1 u + 7 |
80 |
(a)
Total age of Adam and Bryan now
= 80 - 14
= 66
Now
Adam's age = 2 u
Bryan's age = 1 u
Total age of Adam and Bryan = 3 u
3 u = 66
1 u = 66 ÷ 3 = 22
Bryan's age now
= 1 u
= 22
(b)
Number of years that Bryan is younger than Adam
= 2 u - 1 u
= 1 u
= 1 x 22
= 22
(c)
Adam's age 14 years' ago
= 2 u - 14
= 2 x 22 - 14
= 44 - 14
= 30
Answer(s): (a) 22; (b) 22; (c) 30