The number of blueberry cookies Ben baked was
27 of the total number of cookies. After baking another 56 blueberry cookies, the number of blueberry cookies became
23 of the total number of cookies. How many cookies did she bake at first?
| |
Blueberry cookies |
Other cookies |
Total cookies |
| Before |
2 u |
5 u |
7 u |
| Change |
+ 56 |
|
|
| After |
2x5 =
10 u |
1x5 =
5 u |
3x5 =
15 u |
The number of other cookies remains unchanged. Make the number of other cookies the same. LCM of 5 and 1 is 5.
Number of more blueberry cookies baked
= 10 u - 2 u
= 8 u
8 u = 56
1 u = 56 ÷ 8 = 7
Number of cookies that Ben baked at first
= 7 u
= 7 x 7
= 49
Answer(s): 49
