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.