35 Dana's money was equal to
23 of Winnie's money at first. After Dana spent $2.30 and Winnie spent $0.90, Dana had
34 as much money as Winnie.
- How much did Winnie have at first? Express your answer in 2 decimal places.
- How much did Dana have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x4 |
Dana
(1) |
Winnie
(2) |
Make p the same
(4)x3 |
| Before |
40 u |
10 u |
9 u |
27 u |
| Change |
- 9.2 |
- 2.3 |
- 0.9 |
- 2.7 |
| After |
12 p |
3 p |
4p |
12 p |
35 Dana's money =
23 Winnie's money
610 Dana's money =
69 Winnie's money
Dana's money : Winnie's money = 10 : 9
(3) = (4)
40 u - 9.2 = 27 u - 2.7
40 u - 27 u = 9.2 - 2.7
13 u = 6.5
1 u = 0.5
Amount Winnie has at first
= 9 u
= 9 x 0.5
= 4.5 (a)
Amount Dana has in the end
= 10 u - 2.3
= (10 x 0.5) - 2.3
= 2.7 (b)
Answers: (a) $4.50; (b) $2.70
