A family travels for 3 hours at 55 miles per hour, then takes a 30 minute break, before continuing for 2 hours at 70 miles per hour. Calculate the total driving time, the distance traveled and the average speed.

3 hours at 55 miles per hour; 165 miles traveled

2 hours at 70 miles per hour : 170 miles traveled

total driving time: 5 hours (2+3)

distance traveled: 335 miles (165+170)

average speed: 62.5 miles per hour [ (55 + 70) / 2 ]