Zara had 102 cheese and banana croissants. After giving away
13 of her cheese croissants and 17 of her banana croissants, she had an equal number of cheese and banana croissants. How many banana croissants did she have at first?
| |
Cheese croissants |
Banana croissants |
Total |
| Before |
3 u |
2 u + 17 |
102 |
| Change |
- 1 u |
- 17 |
|
| After |
2 u |
2 u |
|
Fraction of the cheese croissants left
= 1 -
13=
23 The number of cheese and banana croissants in the end is the same.
Total number of croissants at first
= 3 u + 2 u + 17
= 5 u + 17
5 u + 17 = 102
5 u = 102 - 17
5 u = 85
1 u = 85 ÷ 5 = 17
Number of banana croissants at first
= 2 u + 17
= 2 x 17 + 17
= 34 + 17
= 51
Answer(s): 51
