Tammy, Usha and Barbara went shopping together. They brought a total of $1342 with them. Tammy spent 10% of her money. Usha spent $230 and Barbara spent four times as much money as Tammy. In the end, they had $792 left. How much money did Usha and Barbara have altogether in the end?
| |
Tammy |
Usha |
Barbara |
Total |
| Before |
10 u |
|
|
1342 |
| Change |
- 1 u |
- 230 |
- 4 u |
- 550 |
| After |
9 u |
? |
792 |
10% =
10100 =
110 Tammy spent: Tammy's total = 1 : 10
Amount that Barbara spent
= 4 x 1 u
= 4 u
Amount that the three girls spent
= 1 u + 4 u + 230
= 5 u + 230
Amount that the three girls spent
= 1342 - 792
= $550
5 u + 230 = 550
5 u = 550 - 230
5 u = 320
1 u = 320 ÷ 5 = 64
Amount that Usha and Barbara had in the end
= 792 - 9 u
= 792 - 9 x 64
= 792 - 576
= $216
Answer(s): $216
