Answer:
21 cupcakes
Explanation:
6 = $7
18 = 6 x 3
18 = 7 x 3
18 = $21
21
We can use proportions to solve
6 cupcakes 18 cupcakes
------------------- = -----------------
7 dollars x dollars
Using cross products
6x = 7* 18
6x =126
Divide by 6
6x/6 =126/6
x =21
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