When Mr Will is 27 years old, his niece is 3 years old. In how many years will he be 4 times as old as his niece?
| |
Mr Will |
His niece |
Difference |
| Before |
27 |
3 |
24 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
1 u |
3 u |
The difference in the age between Mr Will and his niece at first and in the end remains the same.
Difference in the age between Mr Will and his niece
= 4 u - 1 u
= 3 u
3 u = 27 - 3
3 u = 24
1 u = 24 ÷ 3 = 8
Number of years' time so Mr Will will be 4 times as old as his niece
= 8 - 3
= 5
Answer(s): 5
