Mary had 104 chocolate chip and apricot cookies. After giving away
18 of her chocolate chip cookies and 14 of her apricot cookies, she had an equal number of chocolate chip and apricot cookies. How many apricot cookies did she have at first?
| |
Chocolate Chip cookies |
Apricot cookies |
Total |
| Before |
8 u |
7 u + 14 |
104 |
| Change |
- 1 u |
- 14 |
|
| After |
7 u |
7 u |
|
Fraction of the chocolate chip cookies left
= 1 -
18=
78 The number of chocolate chip and apricot cookies in the end is the same.
Total number of cookies at first
= 8 u + 7 u + 14
= 15 u + 14
15 u + 14 = 104
15 u = 104 - 14
15 u = 90
1 u = 90 ÷ 15 = 6
Number of apricot cookies at first
= 7 u + 14
= 7 x 6 + 14
= 42 + 14
= 56
Answer(s): 56
