Roshel had $400 more than Pamela. Roshel spent 0.8 of her money and Pamela spent 30% of her money. In the end, Roshel and Pamela had the same amount of money left. Find the amount of money that Roshel had in the end.
|
Roshel |
Pamela |
Comparing Roshel and Pamela at first |
400 more |
|
Before |
5x7 = 35 u |
10x1 = 10 u |
Change |
- 4x7 = - 28 u |
- 3x1 = - 3 u |
After |
1x7 = 7 u |
7x1 = 7 u |
0.8 =
810 =
45 30% =
30100 =
310 Roshel and Pamela had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 1 and 7 is 7.
Amount that Roshel had more than Pamela at first
= 35 u - 10 u
= 25 u
25 u = 400
1 u = 400 ÷ 25 = 16
Amount that Roshel had in the end
= 7 u
= 7 x 16
= $112
Answer(s): $112