Xuan had $105 more than Oscar. Xuan spent
23 of her money and Oscar spent
37 of his money. In the end, Oscar and Xuan had the same amount of money left. Find the amount of money Oscar had at first.
| |
Xuan |
Oscar |
More |
Before |
3x4 =
12 u |
7 u |
5 u |
Change |
- 2x4 =
- 8 u |
- 3 u |
|
After |
1x4 =
4 u |
4 u |
|
Fraction of money that Xuan left
= 1 -
23 =
13 Fraction of money that Oscar left
= 1 -
37 =
47 The amount of money that Oscar and Xuan had in the end is the same. Make the amount of money that Oscar and Xuan had in the end the same. LCM of 1 and 4 is 4.
Amount that Xuan had more than Oscar at first
= 12 u - 7 u
= 5 u
5 u = 105
1 u = 105 ÷ 5 = 21
Amount that Oscar had at first
= 7 u
= 7 x 21
= $147
Answer(s): $147
