A bus leaves Denver 30 minutes before a second bus.

The first bus travels at 45 mph, and the second bus travels 66 mph.

How long does it take the 2nd bus to catch up to the first bus?

a) Let h=\displaystyle {h}= the time the first bus spends traveling. Write the equation you would use to find this time.  

b) hours after the first bus left, the second bus catches up. (Round to one decimal place.)

c) Convert your time from b) to hours to hours and minutes:
hours and minutes