Traveling at 55 miles per hour, how many minutes, rounded to the nearest whole number, does it take to drive 310 miles from boston to syracuse?

It can be solved by making it on bridge:
      (55mil / hr)*(1hr / 60min)
hr of numerator is cancelled by hr of denominator:
      =0.92mil / min
310 miles  from Boston to Syracuse:
(310mil)/(0.92mil / min)
=337 minutes
So, 
It takes 337 minutes to drive 310 miles at 55 miles per hour.

310/55= 5 35/55
5 35/55=5 7/11
5 7/11 ≈ 5 38/60
5 hours and 38 minutes
or 338 minutes.

W-14=t. that i think is the answer idk