Cindy had $180 more than Olivia. Cindy spent 0.8 of her money and Olivia spent 20% of her money. In the end, Cindy and Olivia had the same amount of money left. Find the amount of money that Cindy had in the end.
| |
Cindy |
Olivia |
Comparing Cindy
and Olivia at first |
180 more |
|
| Before |
5x4 =
20 u |
5x1 =
5 u |
| Change |
- 4x4 =
- 16 u |
- 1x1 =
- 1 u |
| After |
1x4 =
4 u |
4x1 =
4 u |
0.8 =
810 =
45 20% =
20100 =
15 Cindy and Olivia had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 1 and 4 is 4.
Amount that Cindy had more than Olivia at first
= 20 u - 5 u
= 15 u
15 u = 180
1 u = 180 ÷ 15 = 12
Amount that Cindy had in the end
= 4 u
= 4 x 12
= $48
Answer(s): $48
