45 Lucy's money was equal to
23 of Linda's money at first. After Lucy spent $1.60 and Linda spent $0.60, Lucy had
34 as much money as Linda.
- How much did Linda have at first? Express your answer in 2 decimal places.
- How much did Lucy have in the end? Express your answer in 2 decimal places.
|
Make p the same (3)x4 |
Lucy (1) |
Linda (2) |
Make p the same (4)x3 |
Before |
20 u |
5 u |
6 u |
18 u |
Change |
- 6.4 |
- 1.6 |
- 0.6 |
- 1.8 |
After |
12 p |
3 p |
4p |
12 p |
45 Lucy's money =
23 Linda's money
45 Lucy's money =
46 Linda's money
Lucy's money : Linda's money = 5 : 6
(3) = (4)
20 u - 6.4 = 18 u - 1.8
20 u - 18 u = 6.4 - 1.8
2 u = 4.6
1 u = 2.3
Amount Linda has at first
= 6 u
= 6 x 2.3
= 13.8 (a)
Amount Lucy has in the end
= 5 u - 1.6
= (5 x 2.3) - 1.6
= 9.9 (b)
Answers: (a) $13.80; (b) $9.90