Cindy and Gem have some croissants each. If Cindy gives Gem 16 croissants, Cindy will have
14 as many croissants as Gem. If Cindy gives Gem 12 croissants, they will have an equal number of croissants. How many croissants does Cindy have at first?
|
Case 1 |
Case 2 |
|
Cindy |
Gem |
Cindy |
Gem |
Before |
1 u + 16 |
4 u - 16 |
2.5 u + 12 |
2.5 u - 12 |
Change |
- 16 |
+ 16 |
- 12 |
+ 12 |
After |
1 u |
4 u |
2.5 u |
2.5 u |
Total number of croissants that Cindy and Gem have
= 1 u + 4 u
= 5 u
Number of croissants that Cindy and Gem each has in the end is the same.
Number of croissants that Cindy and Gem each has in the end in Case 2
= 5 u ÷ 2
= 2.5 u
Number of croissants that Cindy had at first is the same in Case 1 and Case 2.
2.5 u + 12 = 1 u + 16
2.5 u - 1 u = 16 - 12
0.5 u = 4
1 u = 4 ÷ 0.5 = 8
Number of croissants that Cindy has
= 1 u + 16
= 1 x 8 + 16
= 8 + 16
= 24
Answer(s): 24