Irene R. answered 02/01/20
BS in Mechanical Engineering and Certified math teacher for 13 years
If he purchased 5 hats for $3.75, that would mean that he paid $0.75 for one hat ($3.75 / 5 = 0.75).
To buy 16 hats, he would multiply $0.75 by 16:
$0.75 * 16 = $12.00 for 16 hats