A manufacturer is testing its prototype racecar in order to gather data about its fuel consumption. The testing company allows car to idel for about 20 hours at which point does it runs out of fuel.when this racecar is runon track at120 milesruns per hour, it uses about four-and a half times as much fuel as it does when idling.it is left idling for5 hours to check all of its systems. How long will the car be able to pratice at 120 miles per hour? Justify your answer