45 Tiffany's money was equal to
23 of Winnie's money at first. After Tiffany spent $1.90 and Winnie spent $0.60, Tiffany had
34 as much money as Winnie.
- How much did Winnie 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)x4 |
Tiffany
(1) |
Winnie
(2) |
Make p the same
(4)x3 |
| Before |
20 u |
5 u |
6 u |
18 u |
| Change |
- 7.6 |
- 1.9 |
- 0.6 |
- 1.8 |
| After |
12 p |
3 p |
4p |
12 p |
45 Tiffany's money =
23 Winnie's money
45 Tiffany's money =
46 Winnie's money
Tiffany's money : Winnie's money = 5 : 6
(3) = (4)
20 u - 7.6 = 18 u - 1.8
20 u - 18 u = 7.6 - 1.8
2 u = 5.8
1 u = 2.9
Amount Winnie has at first
= 6 u
= 6 x 2.9
= 17.4 (a)
Amount Tiffany has in the end
= 5 u - 1.9
= (5 x 2.9) - 1.9
= 12.6 (b)
Answers: (a) $17.40; (b) $12.60
