Question

2 hours after a freight train leaves delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. after travelling 4 hrs the passenger train overtakes the freight train. the average speed of the freight train was

Answer 1

A shopkeeper mixes 35 kg of wheat which cost him rs.15 per kg with 25 kg of wheat which cost him rs.20 per kg.he sells the mixture at rs.22 per kg.his gain is