Question

at Frank's auto plaza there are currently 11 new cars, 8 used cars, 12 new trucks and 10 used trucks. frank is going to choose one of these vehicles at random to be the deal of the month. what is the probability that the vehicle that frank chooses is used or is a car?

Answer 1

11 new cars

8 used cars

12 new trucks

10 used trucks

Total vehicles

11+8+12+10 = 41

It is the denominator of the fraction.

The subset "used" + "cars" has 11 (new cars) + 8 (used cars) + 10 (used trucks) = 29 elements.

It is the numerator of the fraction.

P(U or C) = 29/41