Roshel and Jane have some cupcakes each. If Roshel gives Jane 22 cupcakes, Roshel will have
58 as many cupcakes as Jane. If Roshel gives Jane 14 cupcakes, they will have an equal number of cupcakes. How many cupcakes does Roshel have at first?
|
Case 1 |
Case 2 |
|
Roshel |
Jane |
Roshel |
Jane |
Before |
5 u + 22 |
8 u - 22 |
6.5 u + 14 |
6.5 u - 14 |
Change |
- 22 |
+ 22 |
- 14 |
+ 14 |
After |
5 u |
8 u |
6.5 u |
6.5 u |
Total number of cupcakes that Roshel and Jane have
= 5 u + 8 u
= 13 u
Number of cupcakes that Roshel and Jane each has in the end is the same.
Number of cupcakes that Roshel and Jane each has in the end in Case 2
= 13 u ÷ 2
= 6.5 u
Number of cupcakes that Roshel had at first is the same in Case 1 and Case 2.
6.5 u + 14 = 5 u + 22
6.5 u - 5 u = 22 - 14
0.5 u = 8
1 u = 8 ÷ 0.5 = 16
Number of cupcakes that Roshel has
= 5 u + 22
= 5 x 16 + 22
= 80 + 22
= 102
Answer(s): 102