Problem 1. A car covers the first half of the distance between two places at 40 km/h and other half at 60 km/h. The average speed of the car is [NEET 1990]
(a) 40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
Problem 1. A car covers the first half of the distance between two places at 40 km/h and other half at 60 km/h. The average speed of the car is [NEET 1990]
(a) 40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
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