35 Joelle's money was equal to
23 of Jane's money at first. After Joelle spent $2.20 and Jane spent $0.60, Joelle had
23 as much money as Jane.
- How much did Jane have at first? Express your answer in 2 decimal places.
- How much did Joelle have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x3 |
Joelle
(1) |
Jane
(2) |
Make p the same
(4)x2 |
| Before |
30 u |
10 u |
9 u |
18 u |
| Change |
- 6.6 |
- 2.2 |
- 0.6 |
- 1.2 |
| After |
6 p |
2 p |
3p |
6 p |
35 Joelle's money =
23 Jane's money
610 Joelle's money =
69 Jane's money
Joelle's money : Jane's money = 10 : 9
(3) = (4)
30 u - 6.6 = 18 u - 1.2
30 u - 18 u = 6.6 - 1.2
12 u = 5.4
1 u = 0.45
Amount Jane has at first
= 9 u
= 9 x 0.45
= 4.05 (a)
Amount Joelle has in the end
= 10 u - 2.2
= (10 x 0.45) - 2.2
= 2.3 (b)
Answers: (a) $4.05; (b) $2.30
