Vanessa had 61 apricot and vanilla cookies. After giving away
15 of her apricot cookies and 16 of her vanilla cookies, she had an equal number of apricot and vanilla cookies. How many vanilla cookies did she have at first?
| |
Apricot cookies |
Vanilla cookies |
Total |
| Before |
5 u |
4 u + 16 |
61 |
| Change |
- 1 u |
- 16 |
|
| After |
4 u |
4 u |
|
Fraction of the apricot cookies left
= 1 -
15=
45 The number of apricot and vanilla cookies in the end is the same.
Total number of cookies at first
= 5 u + 4 u + 16
= 9 u + 16
9 u + 16 = 61
9 u = 61 - 16
9 u = 45
1 u = 45 ÷ 9 = 5
Number of vanilla cookies at first
= 4 u + 16
= 4 x 5 + 16
= 20 + 16
= 36
Answer(s): 36
