Hi there!
In order to find your answers, you'll need to use the cross product method:
First question:
2 apples → $1.50
8 apples → $x
(1.50 × 8) ÷ 2 = $x
12 ÷ 2 = $x
6 = $x
Your first answer is: 8 apples cost $6.
Second question:
2 apples → $1.50
x apples → $18
(2 × 18) ÷ 1.50 = x apples
36 ÷ 1.50 = x apples
24 = x apples
Your second answer is: You can buy 24 apples with $18.
There you go! I really hope this helped, if there's anything just let me know! :)
