Rachel had $80 more than Marion. Rachel spent 0.4 of her money and Marion spent 10% of her money. In the end, Rachel and Marion had the same amount of money left. Find the amount of money that Rachel had in the end.
| |
Rachel |
Marion |
Comparing Rachel
and Marion at first |
80 more |
|
| Before |
5x3 =
15 u |
10x1 =
10 u |
| Change |
- 2x3 =
- 6 u |
- 1x1 =
- 1 u |
| After |
3x3 =
9 u |
9x1 =
9 u |
0.4 =
410 =
25 10% =
10100 =
110 Rachel and Marion had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 3 and 9 is 9.
Amount that Rachel had more than Marion at first
= 15 u - 10 u
= 5 u
5 u = 80
1 u = 80 ÷ 5 = 16
Amount that Rachel had in the end
= 9 u
= 9 x 16
= $144
Answer(s): $144
