Wendy had 112 cheese and strawberry cookies. After giving away
13 of her cheese cookies and 12 of her strawberry cookies, she had an equal number of cheese and strawberry cookies. How many strawberry cookies did she have at first?
| |
Cheese cookies |
Strawberry cookies |
Total |
| Before |
3 u |
2 u + 12 |
112 |
| Change |
- 1 u |
- 12 |
|
| After |
2 u |
2 u |
|
Fraction of the cheese cookies left
= 1 -
13=
23 The number of cheese and strawberry cookies in the end is the same.
Total number of cookies at first
= 3 u + 2 u + 12
= 5 u + 12
5 u + 12 = 112
5 u = 112 - 12
5 u = 100
1 u = 100 ÷ 5 = 20
Number of strawberry cookies at first
= 2 u + 12
= 2 x 20 + 12
= 40 + 12
= 52
Answer(s): 52
