45 Irene's money was equal to
23 of Kylie's money at first. After Irene spent $1.70 and Kylie spent $0.70, Irene had
34 as much money as Kylie.
- How much did Kylie have at first? Express your answer in 2 decimal places.
- How much did Irene have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x4 |
Irene
(1) |
Kylie
(2) |
Make p the same
(4)x3 |
| Before |
20 u |
5 u |
6 u |
18 u |
| Change |
- 6.8 |
- 1.7 |
- 0.7 |
- 2.1 |
| After |
12 p |
3 p |
4p |
12 p |
45 Irene's money =
23 Kylie's money
45 Irene's money =
46 Kylie's money
Irene's money : Kylie's money = 5 : 6
(3) = (4)
20 u - 6.8 = 18 u - 2.1
20 u - 18 u = 6.8 - 2.1
2 u = 4.7
1 u = 2.35
Amount Kylie has at first
= 6 u
= 6 x 2.35
= 14.1 (a)
Amount Irene has in the end
= 5 u - 1.7
= (5 x 2.35) - 1.7
= 10.05 (b)
Answers: (a) $14.10; (b) $10.05
