Tim had $51 more than Tiffany. After Tiffany spent
27 of her money, Tim had twice as much money as Tiffany. How much money did Tim have at first?
| |
Tim |
Tiffany |
| Before |
10 u |
7 u |
| Change |
|
- 2 u |
| After |
10 u |
5 u |
Amount that Tim had in the end
= 2 x 5 u
= 10 u
If Tiffany had another $51 at first, the amounts that Tim and Tiffany each had at first will be the same.
10 u = 7 u + 51
10 u - 7 u = 51
3 u = 51
1 u = 51 ÷ 3 = 17
Amount Tim had at first
= 10 u
= 10 x 17
= $170
Answer(s): $170
