Question

A Man started his journey, he travelled 400 km, at the speed of 40 km/hr then he went to another 300 km, at the speed of 20 km/hr. Further he went 600 km, at the speed of 30 kmk/hr. The average speed of a Man is:

Answer 1

Total distance travelled = $400+300+600$=$1300$Km

Total time taken = $\frac{400}{40}+$ $\frac{300}{20}+\frac{600}{30}$=$45$Hr

So Average speed = $\frac{1300}{45}$=$\frac{260}{9}$Km/Hr