35 Jane's money was equal to
25 of Shiyun's money at first. After Jane spent $1.80 and Shiyun spent $0.90, Jane had
25 as much money as Shiyun.
- How much did Shiyun have at first? Express your answer in 2 decimal places.
- How much did Jane have in the end? Express your answer in 2 decimal places.
|
Make p the same (3)x5 |
Jane (1) |
Shiyun (2) |
Make p the same (4)x2 |
Before |
50 u |
10 u |
15 u |
30 u |
Change |
- 9 |
- 1.8 |
- 0.9 |
- 1.8 |
After |
10 p |
2 p |
5p |
10 p |
35 Jane's money =
25 Shiyun's money
610 Jane's money =
615 Shiyun's money
Jane's money : Shiyun's money = 10 : 15
(3) = (4)
50 u - 9 = 30 u - 1.8
50 u - 30 u = 9 - 1.8
20 u = 7.2
1 u = 0.36
Amount Shiyun has at first
= 15 u
= 15 x 0.36
= 5.4 (a)
Amount Jane has in the end
= 10 u - 1.8
= (10 x 0.36) - 1.8
= 1.8 (b)
Answers: (a) $5.40; (b) $1.80