Tammy had $18 more than Olivia at first. Olivia spent
25 of her money and Tammy spent
12 of her money. Given that they had equal amount of money left, how many much did Olivia have at first?
| |
Tammy |
Olivia |
More |
Before |
5x1 =
5 u |
2x3 =
6 u |
1 u |
Change |
- 2x1 =
- 2 u |
- 1x3 =
- 3 u |
|
After |
3x1 =
3 u |
1x3 =
3 u |
|
Fraction of money that Olivia had left
= 1 -
25 =
35 Fraction of money that Tammy had left
= 1 -
12 =
12 The amount that Tammy and Olivia had left is the same. Make the amount that Tammy and Olivia had left is the same. LCM of 3 and 1 is 3.
Amount that Olivia had at first = 5 u
Amount that Tammy had at first = 6 u
Amount that Tammy had more than Olivia at first
= 6 u - 5 u
= 1 u
= $18
Amount that Olivia had at first
= 5 u
= 5 x 18
= $90
Answer(s): $90
