How many minutes does it take an athlete to run a 10.0 kilometer race? assume the athlete's pace is 6.50 minutes per mile. (1 mi = 1.609 km)?

    1.609 kilometers are 1 miles
so     1   kilometer is (1 km)(1 mi)/ (1.609 km)=0.6215 km

it takes the athlete:   6.5 minutes to complete 1 mile
                   so in:         1 minute  he completes 1/6.5 = 0.1538 mile

thus, the speed of the athlete is 0.1538 miles/ minute

                        =  (0.1538*0.6215) km/ min
                        = 0.0959 km/min

Time =  Distance / Speed

the time to run 10 km is (10 km)/ (0.0959 km/min)=(10/0.0959) min = 10.43 minutes

10.43