Question 749542
{{{456/75}}}

{{{6.08}}} 

So it will take 6.08 hours for just the driving time alone.

Multiply 6.08 * 60 to find the number of minutes.  

{{{6.08*60}}}

{{{364.8}}}   

364.8 minutes of driving time.  Now we need to calculate the stopped time and add to the driving time:

{{{4*21}}}

{{{84}}}

So there are 84 minutes of stopped time.

{{{364.8+80}}}

{{{444.8}}}

It takes 444.8 minutes.  Let's divide this by 60 to find the number of hours.

{{{444.8/60}}}

{{{7.413333333333}}}

So it takes approximately 7.4 hours