Adam is 5 times as old as Bryan now.
In 19 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 28 years ago?
|
Adam |
Bryan |
Total |
Now |
5 u |
1 u |
6 u |
Change |
+ 19 |
+ 19 |
+ 38 |
19 years later |
5 u + 19 |
1 u + 19 |
80 |
(a)
Total age of Adam and Bryan now
= 80 - 38
= 42
Now
Adam's age = 5 u
Bryan's age = 1 u
Total age of Adam and Bryan = 6 u
6 u = 42
1 u = 42 ÷ 6 = 7
Bryan's age now
= 1 u
= 7
(b)
Number of years that Bryan is younger than Adam
= 5 u - 1 u
= 4 u
= 4 x 7
= 28
(c)
Adam's age 28 years' ago
= 5 u - 28
= 5 x 7 - 28
= 35 - 28
= 7
Answer(s): (a) 7; (b) 28; (c) 7