45 Kathy's money was equal to
23 of Wendy's money at first. After Kathy spent $2.50 and Wendy spent $0.80, Kathy had
34 as much money as Wendy.
- How much did Wendy have at first? Express your answer in 2 decimal places.
- How much did Kathy have in the end? Express your answer in 2 decimal places.
|
Make p the same (3)x4 |
Kathy (1) |
Wendy (2) |
Make p the same (4)x3 |
Before |
20 u |
5 u |
6 u |
18 u |
Change |
- 10 |
- 2.5 |
- 0.8 |
- 2.4 |
After |
12 p |
3 p |
4p |
12 p |
45 Kathy's money =
23 Wendy's money
45 Kathy's money =
46 Wendy's money
Kathy's money : Wendy's money = 5 : 6
(3) = (4)
20 u - 10 = 18 u - 2.4
20 u - 18 u = 10 - 2.4
2 u = 7.6
1 u = 3.8
Amount Wendy has at first
= 6 u
= 6 x 3.8
= 22.8 (a)
Amount Kathy has in the end
= 5 u - 2.5
= (5 x 3.8) - 2.5
= 16.5 (b)
Answers: (a) $22.80; (b) $16.50