Yoko had 120 apple and cherry wafers. After giving away
13 of her apple wafers and 10 of her cherry wafers, she had an equal number of apple and cherry wafers. How many cherry wafers did she have at first?
| |
Apple wafers |
Cherry wafers |
Total |
| Before |
3 u |
2 u + 10 |
120 |
| Change |
- 1 u |
- 10 |
|
| After |
2 u |
2 u |
|
Fraction of the apple wafers left
= 1 -
13=
23 The number of apple and cherry wafers in the end is the same.
Total number of wafers at first
= 3 u + 2 u + 10
= 5 u + 10
5 u + 10 = 120
5 u = 120 - 10
5 u = 110
1 u = 110 ÷ 5 = 22
Number of cherry wafers at first
= 2 u + 10
= 2 x 22 + 10
= 44 + 10
= 54
Answer(s): 54
