Shannon baked a total of 406 croissants and shortbreads. After giving away 75% of the shortbreads and 90% of the croissants, she was left with five times as many shortbreads as croissants. Find the number of croissants Shannon gave away.
| |
Shortbreads |
Croissants |
| Before |
4x5 =
20 u
|
10 u |
| Change |
- 3x5 =
15 u |
- 9 u |
| After |
1x5 =
5 u |
1 u |
Comparing shortbreads and
croissants in the end |
5x1 =
5 u |
1x1 =
1 u |
75% =
75100 =
3490% =
90100 =
910The number of shortbreads in the end is the repeated identity. Make the number of shortbreads in the end the same. LCM of 1 and 5 is 5.
Total number of pastries at first
= 20 u + 10 u
= 30 u
30 u = 406
1 u = 406 ÷ 30 = 5
Number of croissants that Shannon gave away
= 9 u
= 9 x 5
= 45
Answer(s): 45
