Ivory had $325 less than Zoe. Zoe spent 0.8 of her money and Ivory spent 30% of her money. In the end, Zoe and Ivory had the same amount of money left. Find the amount of money that Zoe had at first.
|
Ivory |
Zoe |
Comparing Zoe and Ivory at first |
|
325 more |
Before |
10x1 = 10 u |
5x7 = 35 u |
Change |
- 3x1 = - 3 u |
- 4x7 = - 28 u |
After |
7x1 = 7 u |
1x7 = 7 u |
0.8 =
810 =
45 30% =
30100 =
310 Ivory and Zoe had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 1 and 7 is 7.
Amount that Ivory had less than Zoe at first
= 35 u - 10 u
= 25 u
25 u = 325
1 u = 325 ÷ 25 = 13
Amount that Zoe had at first
= 35 u
= 35 x 13
= $455
Answer(s): $455