Math Word Problem

Question

Colton likes to make desserts for bake sales. Last month, he made 1 batch of brownies and 3 batches of cookies, which called for 12 eggs total. The month before, he baked 2 batches of brownies and 1 batch of cookies, which required a total of 9 eggs. How many eggs did Colton use for a batch of each dessert?

Answer 1

b + 2c = 12

2b+ c =9

4b+2c = 18

b + 2c = 12

3b = 6

b = 6/3 = 2 eggs for a batch of brownies

c = 9-2(2) = 5 eggs for a batch of cookies