Joelle and Roshel had a total of $660 at first. After Joelle spent
35 of her money and Roshel spent
23 of her money, they had the same amount of money left.
- How much money did Joelle have at first?
- Roshel has the same number of $5-notes and $10-notes at first. How many $10-notes did she have at first?
| |
Joelle |
Roshel |
Total |
Before |
5 u |
3x2 =
6 u |
11 u |
Change |
- 3 u |
- 2x2 =
- 4 u |
|
After |
2 u |
1x2 =
2 u |
|
(a)
The amount that Joelle and Roshel had in the end is the same. Make the amount that they each had in the end the same. LCM of 1 and 2 is 2.
Total amount that Joelle and Roshel had at first
= 5 u + 6 u
= 11 u
11 u = 660
1 u = 660 ÷ 11 = 60
Amount that Joelle had at first
= 5 u
= 5 x 60
= $300
(b)
Amount that Roshel had at first
= 6 u
= 6 x 60
= $360
Roshel has the same number of $5-note and $10-note at first.
Value of 1 set of $5-note and $10-note
= 5 + 10
= $15
Number of 5-notes
= 360 ÷ 15
= 24
Answer(s): (a) $300; (b) 24
