Question

A boy covers 10 km at a speed of 5km/hr, 30 km at a speed of 7km/hr of 20 km at a speed of 15km/hr. Find our average speed

Answer 1

Here, P = 9 km, Q = 25 km, R = 30 km

x = 3 km/h, y = 5 km/h and z = 10km/h

Therefore, Required average speed

P+Q+RPx+Qy+RzP+Q+RPx+Qy+Rz

9+25+3093+255+30109+25+3093+255+3010

643+5+3=6411643+5+3=6411

5911km/h

* You solve this Question as type of this Answer*

Answer 2

Answer:

35/6

Explanation:a