35 Gwen's money was equal to
25 of Dana's money at first. After Gwen spent $2.20 and Dana spent $0.70, Gwen had
25 as much money as Dana.
- How much did Dana have at first? Express your answer in 2 decimal places.
- How much did Gwen have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Gwen
(1) |
Dana
(2) |
Make p the same
(4)x2 |
| Before |
50 u |
10 u |
15 u |
30 u |
| Change |
- 11 |
- 2.2 |
- 0.7 |
- 1.4 |
| After |
10 p |
2 p |
5p |
10 p |
35 Gwen's money =
25 Dana's money
610 Gwen's money =
615 Dana's money
Gwen's money : Dana's money = 10 : 15
(3) = (4)
50 u - 11 = 30 u - 1.4
50 u - 30 u = 11 - 1.4
20 u = 9.6
1 u = 0.48
Amount Dana has at first
= 15 u
= 15 x 0.48
= 7.2 (a)
Amount Gwen has in the end
= 10 u - 2.2
= (10 x 0.48) - 2.2
= 2.6 (b)
Answers: (a) $7.20; (b) $2.60
