Jane baked a total of 383 shortbreads and croissants. After giving away 75% of the croissants and 90% of the shortbreads, she was left with thrice as many croissants as shortbreads. Find the number of shortbreads Jane gave away.
| |
Croissants |
Shortbreads |
| Before |
4x3 =
12 u
|
10 u |
| Change |
- 3x3 =
9 u |
- 9 u |
| After |
1x3 =
3 u |
1 u |
Comparing croissants and
shortbreads 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 = 383
1 u = 383 ÷ 22 = 7
Number of shortbreads that Jane gave away
= 9 u
= 9 x 7
= 63
Answer(s): 63
