A batch cupcake recipe calls for 60...

Problema Solution

A batch cupcake recipe calls for 60 teaspoons of baking powder, but all you have is baking soda. The baker can substitute two parts cream of tartar and one part baking soda for the baking powder. How many teaspoons of cream of tartar are needed?

Answer provided by our tutors

Let x is needed.

So x+2x= 60

or 3x=60

or x=20

So 40 spoons of cream of tartar is needed.

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