45 Kimberly's money was equal to
25 of Gabby's money at first. After Kimberly spent $1.70 and Gabby spent $0.80, Kimberly had
25 as much money as Gabby.
- How much did Gabby 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)x5 |
Kimberly (1) |
Gabby (2) |
Make p the same (4)x2 |
Before |
25 u |
5 u |
10 u |
20 u |
Change |
- 8.5 |
- 1.7 |
- 0.8 |
- 1.6 |
After |
10 p |
2 p |
5p |
10 p |
45 Kimberly's money =
25 Gabby's money
45 Kimberly's money =
410 Gabby's money
Kimberly's money : Gabby's money = 5 : 10
(3) = (4)
25 u - 8.5 = 20 u - 1.6
25 u - 20 u = 8.5 - 1.6
5 u = 6.9
1 u = 1.38
Amount Gabby has at first
= 10 u
= 10 x 1.38
= 13.8 (a)
Amount Kimberly has in the end
= 5 u - 1.7
= (5 x 1.38) - 1.7
= 5.2 (b)
Answers: (a) $13.80; (b) $5.20