An automobile travels at the rate of 25 m/s for 5 minutes, then at 30 m/s for 10 minutes, and finally at 10 m/s for 2 minutes. Find a. the total distance covered in meters and the average speed in m/s

total distance = 30*10*60 + 10*2*60 = 19200

avg speed is 19200/(12*60) = 26.7m/s