45 Fanny's money was equal to
25 of Min's money at first. After Fanny spent $2.40 and Min spent $1.10, Fanny had
25 as much money as Min.
- How much did Min have at first? Express your answer in 2 decimal places.
- How much did Fanny have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Fanny
(1) |
Min
(2) |
Make p the same
(4)x2 |
| Before |
25 u |
5 u |
10 u |
20 u |
| Change |
- 12 |
- 2.4 |
- 1.1 |
- 2.2 |
| After |
10 p |
2 p |
5p |
10 p |
45 Fanny's money =
25 Min's money
45 Fanny's money =
410 Min's money
Fanny's money : Min's money = 5 : 10
(3) = (4)
25 u - 12 = 20 u - 2.2
25 u - 20 u = 12 - 2.2
5 u = 9.8
1 u = 1.96
Amount Min has at first
= 10 u
= 10 x 1.96
= 19.6 (a)
Amount Fanny has in the end
= 5 u - 2.4
= (5 x 1.96) - 2.4
= 7.4 (b)
Answers: (a) $19.60; (b) $7.40
