Diana had $210 more than Shiyun. Diana spent 0.8 of her money and Shiyun spent 20% of her money. In the end, Diana and Shiyun had the same amount of money left. Find the amount of money that Diana had in the end.
| |
Diana |
Shiyun |
Comparing Diana
and Shiyun at first |
210 more |
|
| Before |
5x4 =
20 u |
5x1 =
5 u |
| Change |
- 4x4 =
- 16 u |
- 1x1 =
- 1 u |
| After |
1x4 =
4 u |
4x1 =
4 u |
0.8 =
810 =
45 20% =
20100 =
15 Diana and Shiyun had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 1 and 4 is 4.
Amount that Diana had more than Shiyun at first
= 20 u - 5 u
= 15 u
15 u = 210
1 u = 210 ÷ 15 = 14
Amount that Diana had in the end
= 4 u
= 4 x 14
= $56
Answer(s): $56
