Risa had $55 less than Zara. Zara spent 0.6 of her money and Risa spent 40% of her money. In the end, Zara and Risa had the same amount of money left. Find the amount of money that Zara had at first.
| |
Risa |
Zara |
Comparing Zara
and Risa at first |
|
55 more |
| Before |
5x2 =
10 u |
5x3 =
15 u |
| Change |
- 2x2 =
- 4 u |
- 3x3 =
- 9 u |
| After |
3x2 =
6 u |
2x3 =
6 u |
0.6 =
610 =
35 40% =
40100 =
25 Risa and Zara had the same amount of money in the end. Make the amount that each had in the end the same. LCM of 2 and 3 is 6.
Amount that Risa had less than Zara at first
= 15 u - 10 u
= 5 u
5 u = 55
1 u = 55 ÷ 5 = 11
Amount that Zara had at first
= 15 u
= 15 x 11
= $165
Answer(s): $165
