Tammy and Opal had equal amount of money. Each day, Tammy spent $15 and Opal spent $22. When Tammy had $112 left, Opal had
38 as much money left as Tammy. How much money did the two girls have at first?
| |
Tammy |
Opal |
| Before |
15 u + 112 |
22 u + 42 |
| Change |
- 15 u |
- 22 u |
| After |
$112 |
$42 |
Amount that Opal had left
=
38 x 112
= $42
The amount that Tammy and Opal had at first is the same.
22 u + 42 = 15 u + 112
22 u - 15 u = 112 - 42
7 u = 70
1 u = 70 ÷ 7 = 10
Amount that Tammy had at first
= 15 u + 112
= 15 x 10 + 112
= 150 + 112
= $262
Total amount that both girls had at first
= 2 x 262
= $524
Answer(s): $524
