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