When Mr Luis is 37 years old, his daughter is 2 years old. In how many years will he be 6 times as old as his daughter?
|
Mr Luis |
His daughter |
Difference |
Before |
37 |
2 |
35 |
Change |
+ ? |
+ ? |
|
After |
6 u |
1 u |
5 u |
The difference in the age between Mr Luis and his daughter at first and in the end remains the same.
Difference in the age between Mr Luis and his daughter
= 6 u - 1 u
= 5 u
5 u = 37 - 2
5 u = 35
1 u = 35 ÷ 5 = 7
Number of years' time so Mr Luis will be 6 times as old as his daughter
= 7 - 2
= 5
Answer(s): 5