35 Tiffany's money was equal to
25 of Julie's money at first. After Tiffany spent $1.60 and Julie spent $1.10, Tiffany had
25 as much money as Julie.
- How much did Julie have at first? Express your answer in 2 decimal places.
- How much did Tiffany have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Tiffany
(1) |
Julie
(2) |
Make p the same
(4)x2 |
| Before |
50 u |
10 u |
15 u |
30 u |
| Change |
- 8 |
- 1.6 |
- 1.1 |
- 2.2 |
| After |
10 p |
2 p |
5p |
10 p |
35 Tiffany's money =
25 Julie's money
610 Tiffany's money =
615 Julie's money
Tiffany's money : Julie's money = 10 : 15
(3) = (4)
50 u - 8 = 30 u - 2.2
50 u - 30 u = 8 - 2.2
20 u = 5.8
1 u = 0.29
Amount Julie has at first
= 15 u
= 15 x 0.29
= 4.35 (a)
Amount Tiffany has in the end
= 10 u - 1.6
= (10 x 0.29) - 1.6
= 1.3 (b)
Answers: (a) $4.35; (b) $1.30
