Emma had 67 vanilla and cherry wafers. After giving away
18 of her vanilla wafers and 22 of her cherry wafers, she had an equal number of vanilla and cherry wafers. How many cherry wafers did she have at first?
| |
Vanilla wafers |
Cherry wafers |
Total |
| Before |
8 u |
7 u + 22 |
67 |
| Change |
- 1 u |
- 22 |
|
| After |
7 u |
7 u |
|
Fraction of the vanilla wafers left
= 1 -
18=
78 The number of vanilla and cherry wafers in the end is the same.
Total number of wafers at first
= 8 u + 7 u + 22
= 15 u + 22
15 u + 22 = 67
15 u = 67 - 22
15 u = 45
1 u = 45 ÷ 15 = 3
Number of cherry wafers at first
= 7 u + 22
= 7 x 3 + 22
= 21 + 22
= 43
Answer(s): 43
