Answer:
$160
Explanation:
28 bags cost $140
4 bags will serve 5 guests
Number of bags that will serve 40 guests:
(40 /5) * 4bags
8 * 4 bags = 32 bags of candy
A bag of candy will cost :
$140 / 28 = $5
Cost of 32 bags :
Cost per bag * 32
$5 * 32 = $160