# A person travels from place ‘A’ to place ‘B’ at a speed of 40 km/hour

A person travels from place ‘A’ to place ‘B’ at a speed of 40 km/hour. While returning he increases his speed by 50%. What would be his average speed for the entire trip?

(a) 36 km/hour

(b) 45 km/hour

(c) 48 km/ hour

(d) 50 km/ hour