Mode: The class which have highest frequency.In this case, class interval 40−50 is the modal class.Now,Lower limit of modal class, l=40,h=10,f1​,=20,f0​=12,f2​=11We know that,Mode =l+(2f1​−f0​−f2​f1​−f0​​)×h=40+(2(20)−12−1120−12​)×10=40+(40−238​)10=40+(178​)×10Mode ≡44.7Hence, the mode of the given data is 44.7 cars.