Julie had $315 more than Sarah. Julie spent 0.8 of her money and Sarah spent 20% of her money. In the end, Julie and Sarah had the same amount of money left. Find the amount of money that Julie had in the end.
| |
Julie |
Sarah |
Comparing Julie
and Sarah at first |
315 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 Julie and Sarah 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 Julie had more than Sarah at first
= 20 u - 5 u
= 15 u
15 u = 315
1 u = 315 ÷ 15 = 21
Amount that Julie had in the end
= 4 u
= 4 x 21
= $84
Answer(s): $84
