The number of cheese croissants Michael baked was
27 of the total number of croissants. After baking another 54 cheese croissants, the number of cheese croissants became
45 of the total number of croissants. How many croissants did she bake at first?
| |
Cheese croissants |
Other croissants |
Total croissants |
| Before |
2 u |
5 u |
7 u |
| Change |
+ 54 |
|
|
| After |
4x5 =
20 u |
1x5 =
5 u |
5x5 =
25 u |
The number of other croissants remains unchanged. Make the number of other croissants the same. LCM of 5 and 1 is 5.
Number of more cheese croissants baked
= 20 u - 2 u
= 18 u
18 u = 54
1 u = 54 ÷ 18 = 3
Number of croissants that Michael baked at first
= 7 u
= 7 x 3
= 21
Answer(s): 21
