Dana and Emily had equal amount of money. Each day, Dana spent $9 and Emily spent $13. When Dana had $110 left, Emily had
15 as much money left as Dana. How much money did the two girls have at first?
| |
Dana |
Emily |
| Before |
9 u + 110 |
13 u + 22 |
| Change |
- 9 u |
- 13 u |
| After |
$110 |
$22 |
Amount that Emily had left
=
15 x 110
= $22
The amount that Dana and Emily had at first is the same.
13 u + 22 = 9 u + 110
13 u - 9 u = 110 - 22
4 u = 88
1 u = 88 ÷ 4 = 22
Amount that Dana had at first
= 9 u + 110
= 9 x 22 + 110
= 198 + 110
= $308
Total amount that both girls had at first
= 2 x 308
= $616
Answer(s): $616
