Emma baked a total of 267 puffs and croissants. After giving away 75% of the croissants and 90% of the puffs, she was left with thrice as many croissants as puffs. Find the number of puffs Emma gave away.
| |
Croissants |
Puffs |
| Before |
4x3 =
12 u
|
10 u |
| Change |
- 3x3 =
9 u |
- 9 u |
| After |
1x3 =
3 u |
1 u |
Comparing croissants and
puffs in the end |
3x1 =
3 u |
1x1 =
1 u |
75% =
75100 =
3490% =
90100 =
910The number of croissants in the end is the repeated identity. Make the number of croissants in the end the same. LCM of 1 and 3 is 3.
Total number of pastries at first
= 12 u + 10 u
= 22 u
22 u = 267
1 u = 267 ÷ 22 = 5
Number of puffs that Emma gave away
= 9 u
= 9 x 5
= 45
Answer(s): 45
