pancake recipe requires 1 2/3 cups of flour to make 20 pancakes how many pancakes can you make with 1 cup of flour

Question

pancake recipe requires 1 2/3 cups of flour to make 20 pancakes how many pancakes can you make with 1 cup of flour

Answer 1

You would set up a ratio and solve for x.  

 

1&2/3 cup of flour over 20 pancakes = 1 cup of flour over x

 

Then cross-multiply:  1 2/3 times x = 20 times 1

 

1 2/3 x = 20

 

Then divide both sides by 1 2/3

 

x = 12