Question

A group of 40 children attended a baseball game on a field trip. Each child received either a hot dog or a bag of popcorn. Hot dogs were $2.25 and popcorn was $1.75. If the total bill was $83.50, how many hotdogs were bought?

Answer 1

x + y = 40
2.25x + 1.75y = 83.50

-1.75x - 1.75y = -70
2.25x + 1.75y = 83.50
.50x = 13.50

27 hotdogs were bought