Ryan and Luke go to the comic book store for Halloween. They have 24$ to spend on comics, which cost $1.50 each and candy bars, which cost $0.75 each. Write an equation and solve ⬇️

Question

If they bought 12 candy bars, how many comics could they buy?

Answer 1

1.5x + .75y = 24

only other constraint on x and y is they must be integers

x= comics

y= bars

17 possibilities

x y

0 24/(3/4=32

1 (24-1.5)/.75 = 22.5/.75 = 2250/75 = 30

2 (24-3)/.75 = 21/.75 = 21(4/3) =28

3 (24-4.5)(4/3) = 19.5(4)/3 = 6.5(4)=26

4 24

5 22

6 20

7 18

8 16

9 14

10 12

11 10

12 8

13 6

14 4

15 2

16 0