Question 211903
Rate*Time=Distance
Make sure your units are consistent. 
Convert all lengths to feet.  
1 mile=5280 feet
4.9 miles/hr=4.9(5280 ft)/hr=25872 ft/hr*(1 hr/3600 sec)=7.187 ft/sec
100 yd=300 feet
Time=Distance/Rate
t=300 ft/(7.187 ft/sec)=41.7 sec
You want the answer in minutes though.
t=41.7 sec(1 min/60 sec)=0.696 minutes