35 Zoe's money was equal to
23 of Usha's money at first. After Zoe spent $2.30 and Usha spent $0.60, Zoe had
45 as much money as Usha.
- How much did Usha have at first? Express your answer in 2 decimal places.
- How much did Zoe have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x5 |
Zoe
(1) |
Usha
(2) |
Make p the same
(4)x4 |
| Before |
50 u |
10 u |
9 u |
36 u |
| Change |
- 11.5 |
- 2.3 |
- 0.6 |
- 2.4 |
| After |
20 p |
4 p |
5p |
20 p |
35 Zoe's money =
23 Usha's money
610 Zoe's money =
69 Usha's money
Zoe's money : Usha's money = 10 : 9
(3) = (4)
50 u - 11.5 = 36 u - 2.4
50 u - 36 u = 11.5 - 2.4
14 u = 9.1
1 u = 0.65
Amount Usha has at first
= 9 u
= 9 x 0.65
= 5.85 (a)
Amount Zoe has in the end
= 10 u - 2.3
= (10 x 0.65) - 2.3
= 4.2 (b)
Answers: (a) $5.85; (b) $4.20
