Abi had five times as much money as Xuan. After Abi spent $10 and Xuan spent $8, Abi had $30 more than Xuan. How much did Abi have in the end?
| |
Abi |
Xuan |
| Before |
5 u |
1 u |
| Change |
- $10 |
- $8 |
| After |
5 u - $10 |
1 u - $8 |
Comparing Abi
and Xuan
in the end |
$30 more |
|
If Xuan was given another $30, the amounts that Abi and Xuan each had in the end would be the same.
5 u - 10 = 1 u - 8 + 30
5 u - 1 u = 10 + 22
4 u = 32
1 u = 32 ÷ 4 = 8
Amount that Abi had in the end
= 5 u - 10
= 5 x 8 - 10
= 40 - 10
= $30
Answer(s): $30
