35 Kimberly's money was equal to
23 of Esther's money at first. After Kimberly spent $1.60 and Esther spent $0.90, Kimberly had
23 as much money as Esther.
- How much did Esther have at first? Express your answer in 2 decimal places.
- How much did Kimberly have in the end? Express your answer in 2 decimal places.
| |
Make p the same
(3)x3 |
Kimberly
(1) |
Esther
(2) |
Make p the same
(4)x2 |
| Before |
30 u |
10 u |
9 u |
18 u |
| Change |
- 4.8 |
- 1.6 |
- 0.9 |
- 1.8 |
| After |
6 p |
2 p |
3p |
6 p |
35 Kimberly's money =
23 Esther's money
610 Kimberly's money =
69 Esther's money
Kimberly's money : Esther's money = 10 : 9
(3) = (4)
30 u - 4.8 = 18 u - 1.8
30 u - 18 u = 4.8 - 1.8
12 u = 3
1 u = 0.25
Amount Esther has at first
= 9 u
= 9 x 0.25
= 2.25 (a)
Amount Kimberly has in the end
= 10 u - 1.6
= (10 x 0.25) - 1.6
= 0.9 (b)
Answers: (a) $2.25; (b) $0.90
