Lucy and Cindy had the same amount of money at first. After Lucy gave $180 to her cousin, Cindy had 7 times as much money as Lucy. How much did Lucy have in the end?
| |
Lucy |
Cindy |
| Before |
1x7 =
7 u |
1x7 =
7 u |
| Change |
- $180 |
|
| After |
1 u |
7 u |
The amount that Cindy had at first and in the end remains unchanged. Make the amount that Cindy had the same. LCM of 1 and 7 is 7.
Amount that Lucy gave to her cousin
= 7 u - 1 u
= 6 u
6 u = 180
1 u = 180 ÷ 6 = 30
Amount that Lucy had in the end
= 1 u
= $180
Answer(s): $180
