Cindy and Roshel have some shortbreads each. If Cindy gives Roshel 14 shortbreads, Cindy will have
56 as many shortbreads as Roshel. If Cindy gives Roshel 5 shortbreads, they will have an equal number of shortbreads. How many shortbreads does Cindy have at first?
|
Case 1 |
Case 2 |
|
Cindy |
Roshel |
Cindy |
Roshel |
Before |
5 u + 14 |
6 u - 14 |
5.5 u + 5 |
5.5 u - 5 |
Change |
- 14 |
+ 14 |
- 5 |
+ 5 |
After |
5 u |
6 u |
5.5 u |
5.5 u |
Total number of shortbreads that Cindy and Roshel have
= 5 u + 6 u
= 11 u
Number of shortbreads that Cindy and Roshel each has in the end is the same.
Number of shortbreads that Cindy and Roshel each has in the end in Case 2
= 11 u ÷ 2
= 5.5 u
Number of shortbreads that Cindy had at first is the same in Case 1 and Case 2.
5.5 u + 5 = 5 u + 14
5.5 u - 5 u = 14 - 5
0.5 u = 9
1 u = 9 ÷ 0.5 = 18
Number of shortbreads that Cindy has
= 5 u + 14
= 5 x 18 + 14
= 90 + 14
= 104
Answer(s): 104