Reggie is 10 years old. His mother is 32 years older than him. In how many years will Reggie's mother be 3 times as old as Reggie?
| |
His mother |
Reggie |
Difference |
| Before |
42 |
10 |
32 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Reggie and his mother at first and in the end remains the same.
Difference in the age between Reggie and his mother
= 3 u - 1 u
= 2 u
2 u = 32
1 u = 32 ÷ 2 = 16
The increase in age of Reggie and his mother remains the same.
Number of years' time so Reggie's mother will be 3 times as old as Reggie
= 16 - 10
= 6
Answer(s): 6
