The number of strawberry cupcakes Ben baked was
27 of the total number of cupcakes. After baking another 80 strawberry cupcakes, the number of strawberry cupcakes became
23 of the total number of cupcakes. How many cupcakes did she bake at first?
| |
Strawberry cupcakes |
Other cupcakes |
Total cupcakes |
| Before |
2 u |
5 u |
7 u |
| Change |
+ 80 |
|
|
| After |
2x5 =
10 u |
1x5 =
5 u |
3x5 =
15 u |
The number of other cupcakes remains unchanged. Make the number of other cupcakes the same. LCM of 5 and 1 is 5.
Number of more strawberry cupcakes baked
= 10 u - 2 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of cupcakes that Ben baked at first
= 7 u
= 7 x 10
= 70
Answer(s): 70
