35 Roshel's money was equal to
25 of Diana's money at first. After Roshel spent $1.60 and Diana spent $1.20, Roshel had
25 as much money as Diana.
- How much did Diana have at first? Express your answer in 2 decimal places.
- How much did Roshel have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Roshel
(1) |
Diana
(2) |
Make p the same
(4)x2 |
| Before |
50 u |
10 u |
15 u |
30 u |
| Change |
- 8 |
- 1.6 |
- 1.2 |
- 2.4 |
| After |
10 p |
2 p |
5p |
10 p |
35 Roshel's money =
25 Diana's money
610 Roshel's money =
615 Diana's money
Roshel's money : Diana's money = 10 : 15
(3) = (4)
50 u - 8 = 30 u - 2.4
50 u - 30 u = 8 - 2.4
20 u = 5.6
1 u = 0.28
Amount Diana has at first
= 15 u
= 15 x 0.28
= 4.2 (a)
Amount Roshel has in the end
= 10 u - 1.6
= (10 x 0.28) - 1.6
= 1.2 (b)
Answers: (a) $4.20; (b) $1.20
