Question

At a school cafeteria a cold lunch costs $1.80, and a hot lunch costs $3.00. During one school year a teacher spent a total of $288.60 on cold lunches and hot lunches. The number of cold lunches the teacher bought was 1 fewer than swice the number of hot lunches the teacher bought.
Which system of equations can be used to find c, the number of cold lunches, and h, the number of hot lunches, the teacher bought during the school year?

Answer 1

Answer:

H=44

C=87

Step-by-step explanation:

1.8 (C) + 3.00 (H) = 288.6

C= 2H-1

1.8 (2H-1) + 3 (H) = 288.6

3.6 H -1.8 + 3 H = 288.6

6.6 H = 290.4

H= 290.4/6.6 = 44

C=87