Problema Solution
Carl and Mike start a 3 mile race at the same time. If Mike ran the race at 6 miles per hour and finishes the race 7.5 minutes before Carl, how fast does Carl run?
Answer provided by our tutors
We will use the formula time = distance/speed.
Mike's time is: 3/6 = 0.5 hours = 0.5*60 min = 30 min
Mike finished the race 7.5 minutes before Carl follows Carlos time is: 30 + 7.5 = 37.5 min.
Carl's rate is: v = 3/(37.5/60)
v = 4.8 mph
Carl ran the race at 4.8 mph.