Winnie had 74 chocolate chip and banana shortbreads. After giving away
15 of her chocolate chip shortbreads and 20 of her banana shortbreads, she had an equal number of chocolate chip and banana shortbreads. How many banana shortbreads did she have at first?
| |
Chocolate Chip shortbreads |
Banana shortbreads |
Total |
| Before |
5 u |
4 u + 20 |
74 |
| Change |
- 1 u |
- 20 |
|
| After |
4 u |
4 u |
|
Fraction of the chocolate chip shortbreads left
= 1 -
15=
45 The number of chocolate chip and banana shortbreads in the end is the same.
Total number of shortbreads at first
= 5 u + 4 u + 20
= 9 u + 20
9 u + 20 = 74
9 u = 74 - 20
9 u = 54
1 u = 54 ÷ 9 = 6
Number of banana shortbreads at first
= 4 u + 20
= 4 x 6 + 20
= 24 + 20
= 44
Answer(s): 44
