if a car drives for c hours going d mih and has 24inch diame

if a car drives for (c) hours going (d mi/h) and has 24-inch diameter wheels, how many revolutions did each wheel make?

Solution

i assumed as speed as 35 miles per hour and travelling time 5 hours

well find out in miles per minutes so that would be 35/60=.58333333333333333333333333 miles per minute

now convert that to inches makes it 36,960 inches per minute

now we have to find the circumference of the wheel so multiply the diameter by 3.14

circumference=d x pie
c=24 x 3.14
c=75.36inches

now divide that 36,960/75.36=490.4 rpm

total number of revolutions for 5 hours = 490.4*5=2452 revolutions