time (t)taken to buy fuel at a filling station varies directly as the number of vehicles (v) in a queue and varies inversely as the number of pumps (P), available at the station. In a station with 5 pumps. it took 10 minutes to fuel 20 vehicles.
Find the:
(a) relationship between p v and t (b)time it takes to fuel 50 vehicle with 2 pumps (c) number of pumps required to fuel 50 vehicles in 20 minute