Question

23. A man walks on a straight road from his home to a
market 2.5 km away with a speed of 5 km/h.
Finding the market closed, he instanly turns and
walks back home with a speed of 7.5 km/h. The
average speed of the man over the interval of time
O to 40 min is equal to
(1) 5 km/h
(2) 25/4 km/h
(3) 30/4 km/h
(4) 45/8km/h​

Answer 1

Answer:

30/4 km / h

hope it helps you

Answer 2

Answer:

5 km/h is your answer.....