Shiyun had 92 blueberry and cheese cookies. After giving away
13 of her blueberry cookies and 22 of her cheese cookies, she had an equal number of blueberry and cheese cookies. How many cheese cookies did she have at first?
| |
Blueberry cookies |
Cheese cookies |
Total |
| Before |
3 u |
2 u + 22 |
92 |
| Change |
- 1 u |
- 22 |
|
| After |
2 u |
2 u |
|
Fraction of the blueberry cookies left
= 1 -
13=
23 The number of blueberry and cheese cookies in the end is the same.
Total number of cookies at first
= 3 u + 2 u + 22
= 5 u + 22
5 u + 22 = 92
5 u = 92 - 22
5 u = 70
1 u = 70 ÷ 5 = 14
Number of cheese cookies at first
= 2 u + 22
= 2 x 14 + 22
= 28 + 22
= 50
Answer(s): 50
