Usha, Mary and Jen went shopping together. They brought a total of $1654 with them. Usha spent 40% of her money. Mary spent $180 and Jen spent twice as much money as Usha. In the end, they had $712 left. How much money did Mary and Jen have altogether in the end?
| |
Usha |
Mary |
Jen |
Total |
| Before |
5 u |
|
|
1654 |
| Change |
- 2 u |
- 180 |
- 4 u |
- 942 |
| After |
3 u |
? |
712 |
40% =
40100 =
25 Usha spent: Usha's total = 2 : 5
Amount that Jen spent
= 2 x 2 u
= 4 u
Amount that the three girls spent
= 2 u + 4 u + 180
= 6 u + 180
Amount that the three girls spent
= 1654 - 712
= $942
6 u + 180 = 942
6 u = 942 - 180
6 u = 762
1 u = 762 ÷ 6 = 127
Amount that Mary and Jen had in the end
= 712 - 3 u
= 712 - 3 x 127
= 712 - 381
= $331
Answer(s): $331
