Tiffany and Oliver had a total of $136. After Tiffany spent
27 of her money and Oliver spent $17, the ratio of Tiffany's money to Kennenth's money became 1 : 2. How much money had Oliver at first?
| |
Tiffany |
Oliver |
Total |
| Before |
7 u |
10 u + $17 |
$136 |
| Change |
- 2 u |
- $17 |
|
| After |
5 u |
|
|
Comparing Tiffany and
Oliver in the end |
1x5 =
5 u |
2x5 =
10 u |
|
The amount that Tiffany had in the end is repeated. Make the amount that Tiffany had in the end the same. LCM of 5 and 1 is 5.
Total amount that Tiffany and Oliver had at first
= 7 u + 10 u + 17
= 17 u + 17
17 u + 17 = 136
17 u = 136 - 17
17 u = 119
1 u = 119 ÷ 17 = 7
Amount that Oliver had at first
= 10 u + 17
= 10 x 7 + 17
= 70 + 17
= $87
Answer(s): $87
