When Mr Nick is 39 years old, his niece is 4 years old. In how many years will he be 6 times as old as his niece?
|
Mr Nick |
His niece |
Difference |
Before |
39 |
4 |
35 |
Change |
+ ? |
+ ? |
|
After |
6 u |
1 u |
5 u |
The difference in the age between Mr Nick and his niece at first and in the end remains the same.
Difference in the age between Mr Nick and his niece
= 6 u - 1 u
= 5 u
5 u = 39 - 4
5 u = 35
1 u = 35 ÷ 5 = 7
Number of years' time so Mr Nick will be 6 times as old as his niece
= 7 - 4
= 3
Answer(s): 3