A man completed a trip of 136 km in 8 hours.Some parts of the trip was covered at 15km/hr and the remaining at 18km/hr .Find the part of the trip covered at 18km/hr

A man completed a trip of 136 km is 8 hours. Some parts of the trip was covered at 15km/hr and the remaining at 18km/hr. Find the part of the trip covered at 18 km/hr.

A man completes a journey in 8 hours. He covers half the distance at 40 km/hr and the rest at 60 km/hr. The length of the journey is :

A man covers half of his journey at 7 km/hr and the remaining half at 2 km/hr. His average speed is

A man covers half of his journey at 6km/hr and the remaining half at 3km/hr. His average speed is

A man completes 30 km of a journey at the speed of 6 km/ hr and the remaining 40 km of the journey in 5 hours. His average speed for the whole journey is

Speed of the stream is 3 km/hr and the upstream speed is 7 km/hr. Find the time taken by boat to cover 91 km downstream.