Mark had 3 times as much money as Fred. After Fred's father gave Fred $36, the amount of money Mark had become $6 less than that of Fred's. How much did Fred have in the end?
| |
Fred |
Mark |
| Before |
1 u |
3 u |
| Change |
+ $36 |
|
| After |
1 u + $36 |
3 u |
The amount that Mark had remains unchanged.
If Mark had another $6, Fred and Mark would have the same amount in the end.
3 u + 6 = 1 u + 36
3 u - 1 u = 36 - 6
2 u = 36 - 6
2 u = 30
1 u = 30 ÷ 2 = 15
Amount that Fred had in the end
= 1 u + 36
= 15 + 36
= $51
Answer(s): $51
