Warren's age is
13 his cousin's age now. In 20 years' time, his age will be
34 that of his cousin's. How old is Warren now?
| |
Warren |
Warren's cousin |
Difference |
| Before |
1x1 =
1 u |
3x1 =
3 u |
2x1 =
2 u |
| Change |
+ 20 |
+ 20 |
|
| After |
3x2 =
6 u |
4x2 =
8 u |
1x2 =
2 u |
The difference in the age between Warren and Warren's cousin remains unchanged. Make the difference in age the same. LCM of 2 and 1 is 2.
Increase in the age of Warren
= 6 u - 1 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
Warren's age now
= 1 u
= 1 x 4
= 4
Answer(s): 4
