Mindy and Troy combined ate 9 pieces are of wedding cake. Mindy ate 3 pieces of cake and Troy had 1/4 of the total cake.

Write an equation to determine how many pieces of cake (c) there was in total.

Find the total number of pieces of cake.

c/4 + 3 = 9

24

Step-by-step explanation:

The cake had a total of c number of pieces originally.

Mindy ate 3 pieces: 3

Troy ate 1/4 of the total cake: c/4

Combined, they ate: c/4 + 3

Combined they ate 9 pieces.

Therefore, c/4 + 3 must equal 9.

c/4 + 3 = 9

c/4 = 6

c = 24

The total number of pieces was 24.