45 Tina's money was equal to
23 of Lynn's money at first. After Tina spent $1.90 and Lynn spent $0.70, Tina had
34 as much money as Lynn.
- How much did Lynn have at first? Express your answer in 2 decimal places.
- How much did Tina have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x4 |
Tina
(1) |
Lynn
(2) |
Make p the same
(4)x3 |
| Before |
20 u |
5 u |
6 u |
18 u |
| Change |
- 7.6 |
- 1.9 |
- 0.7 |
- 2.1 |
| After |
12 p |
3 p |
4p |
12 p |
45 Tina's money =
23 Lynn's money
45 Tina's money =
46 Lynn's money
Tina's money : Lynn's money = 5 : 6
(3) = (4)
20 u - 7.6 = 18 u - 2.1
20 u - 18 u = 7.6 - 2.1
2 u = 5.5
1 u = 2.75
Amount Lynn has at first
= 6 u
= 6 x 2.75
= 16.5 (a)
Amount Tina has in the end
= 5 u - 1.9
= (5 x 2.75) - 1.9
= 11.85 (b)
Answers: (a) $16.50; (b) $11.85
