25 cakes can be completely decorated using 4 gallons of icing.
Step-by-step explanation:
Given:
4 gallons of icing
16 cups =1 gallon
No. of icing cups = [tex]4\times16[/tex] cups
=64 cups
No. of cups required to decorate and frost a cake= 4% of total no. of icing cups
= [tex]\frac{(4\times64)}{100}[/tex]
= 2.56
2.56 cups of icing is required to decorate each cake.
Maximum no. of cakes decorated = [tex]\frac{ (64\times1)}{2.56}[/tex]
= 25
25 cakes can be completely decorated using 4 gallons of icing.
