Fanny baked a total of 280 croissants and puffs. After giving away 90% of the puffs and 75% of the croissants, she was left with four times as many puffs as croissants. Find the number of croissants Fanny gave away.
| |
Puffs |
Croissants |
| Before |
10x4 =
40 u
|
4 u |
| Change |
- 9x4 =
36 u |
- 3 u |
| After |
1x4 =
4 u |
1 u |
Comparing puffs and
croissants in the end |
4x1 =
4 u |
1x1 =
1 u |
90% =
90100 =
91075% =
75100 =
34The number of puffs in the end is the repeated identity. Make the number of puffs in the end the same. LCM of 1 and 4 is 4.
Total number of pastries at first
= 40 u + 4 u
= 44 u
44 u = 280
1 u = 280 ÷ 44 = 6
Number of croissants that Fanny gave away
= 3 u
= 3 x 6
= 18
Answer(s): 18
