Carl and Mike start a 3 mile race at the same time. Mike ran the race at 6 miles per hour and finishes the race 7.5 minutes before Carl, how fast does Carl run?

Question

what is Carl's velocity in m/h

Answer 1

Mike runs the 3-mile race at 6 miles per hour.

Time = distance / speed  =  3 miles / 6 miles per hour  =  1/2 hour, or 30 minutes.

 

Carl runs the race in 30 + 7.5 minutes  =  37.5 minutes. Converting this to hours gives us 0.625 hours.

Speed  =  distance / time  =  3 miles / 0.625 hours  =  4.8 miles per hour.