Question 118971
When the second bus starts its trip, the busses are already 44 miles apart because the first bus has been traveling 1 hour at 44 miles/hr.


Once the second bus starts, the two busses are getting farther apart at the rate of 44 mph plus 48 mph or 92 mph.  The question becomes how long does it take to travel the remainder of the 274 miles, i.e. 274 - 44 = 230 miles at 92 mph.


{{{230/92=2.5}}}.


So the busses will be 274 miles apart 2 and a half hours after the 2nd bus starts.  We know that the first bus starts at 1 PM, and the second bus starts one hour later or 2 PM, so 2 PM plus 2.5 hours is 4:30 PM.