A container holds 50 electronic components, of which 10 are defective. If 6 components are drawn at random from the container, the probability that at least 3 are not defective is ?If 7 components are drawn at random from the container, the probability that exactly 3 of them are defective is

The answer is B. If you put the information given into a proportion, you will find that Anthony worked for 7.5 hours. When the problem says that his hourly rate is proportional to Carla's, it means that he gets the same amount of money per hour as she does.