2. The number of hours (t) it takes for a number of people (p) to
assemble machines (m) varies directly as the number of
machines and inversely as the number of people assembling
the machines. If three people can assemble 10 machines in 5
hours, how many people would it take to assemble 40
machines in 6 hours?
3. The electrical resistance ® of a wire directly proportional to its
length (l) and inversely to the square of its diameter (d). the
resistance of 400-inch wire with a diameter of 0.2 inches is 45
ohms. What is the resistance of a 250-inch wire with a
diameter of 0.5 inches?​