Answer:
1/6
Explanation:
We are told that:
Ernesto used 2/3 of a cup of frosting to decorate some cupcakes.
He divided all the frosting equally among 4 cupcakes.
The amount of frosting Ernesto used on each cupcake is calculated as:
2/3 cup ÷ 4 cupcakes
= 2/3 × 1/4
= 2/12
= 1/6 of 2/3cup of frosting was used on each cupcake