Xuan had $330 more than Yoko. Xuan spent
47 of her money and Yoko spent
56 of her money. In the end, Xuan had 4 times as much as Yoko. Find the amount of money Yoko had at first.
| |
Xuan |
Yoko |
Comparing Xuan
and Yoko at first |
$330 more |
|
| Before |
7x4 =
28 u |
6x3 =
18 u |
| Change |
- 4x4 =
- 16 u |
- 5x3 =
- 15 u |
| After |
3x4 =
12 u |
1x3 =
3 u |
Comparing Xuan
and Yoko in the end |
4x3 =
12 u |
1x3 =
3 u |
The amount that Xuan had in the end is repeated. Make the amount that Xuan had in the end the same. LCM of 4 and 3 is 12.
Amount that Xuan had more than Yoko
= 28 u - 18 u
= 10 u
10 u = 330
1 u = 330 ÷ 10 = 33
Amount that Yoko had at first
= 18 u
= 18 x 33
= $594
Answer(s): $594
