30% of the cars sold by Car Dealer A were blue. 50% of the cars sold by Car Dealer B were blue. Which statement must be true?


If both dealers sold the same number of cars, Car Dealer B sold 20 more blue cars.



Car Dealer B sold more blue cars than Car Dealer A did.



If Car Dealer A sold 50 total cars, 30 would be blue.



If both dealers sold 70 total cars, Car Dealer B sold 14 more blue cars.