Barbara had $70 more than Kimberly. Barbara spent 0.2 of her money and Kimberly spent 10% of her money. In the end, Barbara and Kimberly had the same amount of money left. Find the amount of money that Barbara had in the end.
| |
Barbara |
Kimberly |
Comparing Barbara
and Kimberly at first |
70 more |
|
| Before |
5x9 =
45 u |
10x4 =
40 u |
| Change |
- 1x9 =
- 9 u |
- 1x4 =
- 4 u |
| After |
4x9 =
36 u |
9x4 =
36 u |
0.2 =
210 =
15 10% =
10100 =
110 Barbara and Kimberly had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 4 and 9 is 36.
Amount that Barbara had more than Kimberly at first
= 45 u - 40 u
= 5 u
5 u = 70
1 u = 70 ÷ 5 = 14
Amount that Barbara had in the end
= 36 u
= 36 x 14
= $504
Answer(s): $504
