The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at 30 miles per hour, how long will it take to drive the same distance at 50 miles per hour? terima kasih

1

Jawapan

2016-06-25T08:47:03+08:00
1.2 hours t = d/r 2 = d/30 d = 60 miles ------- t = 60/50 t = 6/5 or 1.2 hours