Adam is 2 times as old as Bryan now.
In 10 years time, their total age is 50 years.
How old is Adam now?
- How old is Bryan now?
- How many years is Bryan younger than Adam?
- How old was Adam 6 years ago?
|
Adam |
Bryan |
Total |
Now |
2 u |
1 u |
3 u |
Change |
+ 10 |
+ 10 |
+ 20 |
10 years later |
2 u + 10 |
1 u + 10 |
50 |
(a)
Total age of Adam and Bryan now
= 50 - 20
= 30
Now
Adam's age = 2 u
Bryan's age = 1 u
Total age of Adam and Bryan = 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Bryan's age now
= 1 u
= 10
(b)
Number of years that Bryan is younger than Adam
= 2 u - 1 u
= 1 u
= 1 x 10
= 10
(c)
Adam's age 6 years' ago
= 2 u - 6
= 2 x 10 - 6
= 20 - 6
= 14
Answer(s): (a) 10; (b) 10; (c) 14