At a school-sponsored car wash, the fees charged were: $5 per car, $8 per pickup truck, $10 per full-size van. Twice as many cars were washed as pickup trucks. The amount collected for washing cars and pickup trucks was $360. A total of $410 was collected at the car wash. Find the number of cars washed. A 40 cars B 25 cars C 20 cars D 65 cars