The number of banana cupcakes Riordan baked was
47 of the total number of cupcakes. After baking another 10 banana cupcakes, the number of banana cupcakes became
34 of the total number of cupcakes. How many cupcakes did she bake at first?
| |
Banana cupcakes |
Other cupcakes |
Total cupcakes |
| Before |
4 u |
3 u |
7 u |
| Change |
+ 10 |
|
|
| After |
3x3 =
9 u |
1x3 =
3 u |
4x3 =
12 u |
The number of other cupcakes remains unchanged. Make the number of other cupcakes the same. LCM of 3 and 1 is 3.
Number of more banana cupcakes baked
= 9 u - 4 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Number of cupcakes that Riordan baked at first
= 7 u
= 7 x 2
= 14
Answer(s): 14
