SOLUTION: you have a total of 60 cupcakes; 36 are choc. You want 70% choc. How many more cupcakes do you need to bake ?

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Question 571263: you have a total of 60 cupcakes; 36 are choc. You want 70% choc. How many more cupcakes do you need to bake ?
Answer by scott8148(6462) About Me  (Show Source):
You can put this solution on YOUR website!
(36 + x) / (60 + x) = 70%

36 + x = 42 + .7x