PLZ HELP

john gets price quotes from two different lawn mowing services for the cost of mowing the field next to his house company A charges $8 plus an additional $5 per hour company B charges $2 plus an additional $6 per hour the total price quote for each company is the same amount how many hours do the companies estimate it will take to mow the field

A. 6
B. 10
C. 21
D. 38