A Train Has A Speed Of 60 Km/h For The First One Hour And 40 Km/h For The Next Half Hour, Average Speed In Km/h Is?
A train has a speed of 60 km/h for the first one hour and 40 km/h for the next half hour,
average speed in km/h is?
(1) 50
(2) 53.33
(3) 48
(4) 70
asked Jun 15 12:00:00 AM