Cathy had $220 more than Min. Cathy spent 0.8 of her money and Min spent 25% of her money. In the end, Cathy and Min had the same amount of money left. Find the amount of money that Cathy had in the end.
| |
Cathy |
Min |
Comparing Cathy
and Min at first |
220 more |
|
| Before |
5x3 =
15 u |
4x1 =
4 u |
| Change |
- 4x3 =
- 12 u |
- 1x1 =
- 1 u |
| After |
1x3 =
3 u |
3x1 =
3 u |
0.8 =
810 =
45 25% =
25100 =
14 Cathy and Min had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 1 and 3 is 3.
Amount that Cathy had more than Min at first
= 15 u - 4 u
= 11 u
11 u = 220
1 u = 220 ÷ 11 = 20
Amount that Cathy had in the end
= 3 u
= 3 x 20
= $60
Answer(s): $60
