Dana had $315 less than Zara. Zara spent 0.6 of her money and Dana spent 30% of her money. In the end, Zara and Dana had the same amount of money left. Find the amount of money that Zara had at first.
| |
Dana |
Zara |
Comparing Zara
and Dana at first |
|
315 more |
| Before |
10x2 =
20 u |
5x7 =
35 u |
| Change |
- 3x2 =
- 6 u |
- 3x7 =
- 21 u |
| After |
7x2 =
14 u |
2x7 =
14 u |
0.6 =
610 =
35 30% =
30100 =
310 Dana 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 7 is 14.
Amount that Dana had less than Zara at first
= 35 u - 20 u
= 15 u
15 u = 315
1 u = 315 ÷ 15 = 21
Amount that Zara had at first
= 35 u
= 35 x 21
= $735
Answer(s): $735
