35 Rachel's money was equal to
25 of Sabrina's money at first. After Rachel spent $1.60 and Sabrina spent $0.80, Rachel had
25 as much money as Sabrina.
- How much did Sabrina have at first? Express your answer in 2 decimal places.
- How much did Rachel have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Rachel
(1) |
Sabrina
(2) |
Make p the same
(4)x2 |
| Before |
50 u |
10 u |
15 u |
30 u |
| Change |
- 8 |
- 1.6 |
- 0.8 |
- 1.6 |
| After |
10 p |
2 p |
5p |
10 p |
35 Rachel's money =
25 Sabrina's money
610 Rachel's money =
615 Sabrina's money
Rachel's money : Sabrina's money = 10 : 15
(3) = (4)
50 u - 8 = 30 u - 1.6
50 u - 30 u = 8 - 1.6
20 u = 6.4
1 u = 0.32
Amount Sabrina has at first
= 15 u
= 15 x 0.32
= 4.8 (a)
Amount Rachel has in the end
= 10 u - 1.6
= (10 x 0.32) - 1.6
= 1.6 (b)
Answers: (a) $4.80; (b) $1.60
