45 Tammy's money was equal to
23 of Yen's money at first. After Tammy spent $2.30 and Yen spent $0.60, Tammy had
34 as much money as Yen.
- How much did Yen have at first? Express your answer in 2 decimal places.
- How much did Tammy have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x4 |
Tammy
(1) |
Yen
(2) |
Make p the same
(4)x3 |
| Before |
20 u |
5 u |
6 u |
18 u |
| Change |
- 9.2 |
- 2.3 |
- 0.6 |
- 1.8 |
| After |
12 p |
3 p |
4p |
12 p |
45 Tammy's money =
23 Yen's money
45 Tammy's money =
46 Yen's money
Tammy's money : Yen's money = 5 : 6
(3) = (4)
20 u - 9.2 = 18 u - 1.8
20 u - 18 u = 9.2 - 1.8
2 u = 7.4
1 u = 3.7
Amount Yen has at first
= 6 u
= 6 x 3.7
= 22.2 (a)
Amount Tammy has in the end
= 5 u - 2.3
= (5 x 3.7) - 2.3
= 16.2 (b)
Answers: (a) $22.20; (b) $16.20
