45 Linda's money was equal to
23 of Min's money at first. After Linda spent $1.70 and Min spent $0.80, Linda had
34 as much money as Min.
- How much did Min have at first? Express your answer in 2 decimal places.
- How much did Linda have in the end? Express your answer in 2 decimal places.
|
Make p the same (3)x4 |
Linda (1) |
Min (2) |
Make p the same (4)x3 |
Before |
20 u |
5 u |
6 u |
18 u |
Change |
- 6.8 |
- 1.7 |
- 0.8 |
- 2.4 |
After |
12 p |
3 p |
4p |
12 p |
45 Linda's money =
23 Min's money
45 Linda's money =
46 Min's money
Linda's money : Min's money = 5 : 6
(3) = (4)
20 u - 6.8 = 18 u - 2.4
20 u - 18 u = 6.8 - 2.4
2 u = 4.4
1 u = 2.2
Amount Min has at first
= 6 u
= 6 x 2.2
= 13.2 (a)
Amount Linda has in the end
= 5 u - 1.7
= (5 x 2.2) - 1.7
= 9.3 (b)
Answers: (a) $13.20; (b) $9.30