Question 754334
Since distance = rate X time, we can plug the given information into that formula and solve for the missing amount.


a) d = rt -->  60 miles = (40 miles/h)X t --> 60 miles/40 mph = t -->

6/4 hours = t


So, when she is driving at 40 mph, it will take her 6/4 hours or 1 1/2 hours or 90 minutes to drive 60 miles.




b) d = rt --> 60 miles = (50 miles/h) X t --> 60 miles/50 mph = t -->  

6/5 hours = t


So, when she is driving at 50 mph, it will take her 6/5 hours or 1 1/5 hours or 72 minutes to drive 60 miles.




c. d = rt --> 60 miles = (60 miles/h) X t --> 60 miles/60 mph = t -->

1 hour = t


So, when she is driving at 60 mph, it will take her 1 hour or 60 minutes to drive 60 miles.