Olivia had $250 more than Anna. Olivia spent 0.8 of her money and Anna spent 30% of her money. In the end, Olivia and Anna had the same amount of money left. Find the amount of money that Olivia had in the end.
| |
Olivia |
Anna |
Comparing Olivia
and Anna at first |
250 more |
|
| Before |
5x7 =
35 u |
10x1 =
10 u |
| Change |
- 4x7 =
- 28 u |
- 3x1 =
- 3 u |
| After |
1x7 =
7 u |
7x1 =
7 u |
0.8 =
810 =
45 30% =
30100 =
310 Olivia and Anna 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 Olivia had more than Anna at first
= 35 u - 10 u
= 25 u
25 u = 250
1 u = 250 ÷ 25 = 10
Amount that Olivia had in the end
= 7 u
= 7 x 10
= $70
Answer(s): $70
