A car rental company has 210 cars to be rented out. They wish to park them in as few rows as possible such that no two adjacent cars are facing the same direction.
Correct: C
The maximum number of cars that can be in a row is 6 (3 cars facing north and 3 cars facing south in an alternating pattern). Since the company has 210 cars, it must park in at least 210/6 = 35 rows, which is obtained by dividing 210 by 6 and rounding up.