Sara has a recipe for a cake that her mother gave her. the recipe calls for 3/4 cups of sugar for each cake. sara and her friend cindy are making 3 cakes instead of one. sara is telling cindy that they will need 9 cups of sugar. explain in words on your paper why sara is right or wrong using a convincing argument. to make 3 cakes how much sugar will they need?

Sara is wrong because making 3 cakes instead of 1 would require 2 1/4 cups of sugar. The original 3/4 cups of sugar would be multiplied by 3 (3/1 x 3/4) which would be 9/4, or 2 1/4, cups.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart