Linda had 75 chocolate chip and cranberry muffins. After giving away
13 of her chocolate chip muffins and 20 of her cranberry muffins, she had an equal number of chocolate chip and cranberry muffins. How many cranberry muffins did she have at first?
| |
Chocolate Chip muffins |
Cranberry muffins |
Total |
| Before |
3 u |
2 u + 20 |
75 |
| Change |
- 1 u |
- 20 |
|
| After |
2 u |
2 u |
|
Fraction of the chocolate chip muffins left
= 1 -
13=
23 The number of chocolate chip and cranberry muffins in the end is the same.
Total number of muffins at first
= 3 u + 2 u + 20
= 5 u + 20
5 u + 20 = 75
5 u = 75 - 20
5 u = 55
1 u = 55 ÷ 5 = 11
Number of cranberry muffins at first
= 2 u + 20
= 2 x 11 + 20
= 22 + 20
= 42
Answer(s): 42
