Gillian and Xandra have some cupcakes each. If Gillian gives Xandra 26 cupcakes, Gillian will have
56 as many cupcakes as Xandra. If Gillian gives Xandra 2 cupcakes, they will have an equal number of cupcakes. How many cupcakes does Xandra have at first?
|
Case 1 |
Case 2 |
|
Gillian |
Xandra |
Gillian |
Xandra |
Before |
5 u + 26 |
6 u - 26 |
5.5 u + 2 |
5.5 u - 2 |
Change |
- 26 |
+ 26 |
- 2 |
+ 2 |
After |
5 u |
6 u |
5.5 u |
5.5 u |
Total number of cupcakes that Gillian and Xandra have
= 5 u + 6 u
= 11 u
Number of cupcakes that Gillian and Xandra each has in the end is the same.
Number of cupcakes that Gillian and Xandra each has in the end in Case 2
= 11 u ÷ 2
= 5.5 u
Number of cupcakes that Gillian had at first is the same in Case 1 and Case 2.
5.5 u + 2 = 5 u + 26
5.5 u - 5 u = 26 - 2
0.5 u = 24
1 u = 24 ÷ 0.5 = 48
Number of cupcakes that Xandra has
= 6 u - 26
= 6 x 48 - 26
= 288 - 26
= 262
Answer(s): 262