45 Cathy's money was equal to
23 of Ivory's money at first. After Cathy spent $1.60 and Ivory spent $0.90, Cathy had
23 as much money as Ivory.
- How much did Ivory have at first? Express your answer in 2 decimal places.
- How much did Cathy have in the end? Express your answer in 2 decimal places.
|
Make p the same (3)x3 |
Cathy (1) |
Ivory (2) |
Make p the same (4)x2 |
Before |
15 u |
5 u |
6 u |
12 u |
Change |
- 4.8 |
- 1.6 |
- 0.9 |
- 1.8 |
After |
6 p |
2 p |
3p |
6 p |
45 Cathy's money =
23 Ivory's money
45 Cathy's money =
46 Ivory's money
Cathy's money : Ivory's money = 5 : 6
(3) = (4)
15 u - 4.8 = 12 u - 1.8
15 u - 12 u = 4.8 - 1.8
3 u = 3
1 u = 1
Amount Ivory has at first
= 6 u
= 6 x 1
= 6 (a)
Amount Cathy has in the end
= 5 u - 1.6
= (5 x 1) - 1.6
= 3.4 (b)
Answers: (a) $6.00; (b) $3.40