There are red cars and blue cars in the parking lot. The ratio of blue to red is 11:6. There are 317 blue cars. How many red cars are in the parking lot? Round your answer to the nearest whole number
If the ratio of blue to red cars is 11:6, then the total ratio of cars is 11+6 = <<11+6=17>>17
Since there are 17 parts in the total ratio, each part represents 317/11 = <<317/11=28.82>>28.82 cars
Therefore, 6 parts represent 6*28.82 = <<6*28.82=173.92>>173.92 cars.
Therefore, there are 174 red cars in the parking lot. Answer: \boxed{174}.