A ship sails out to a mark at the rate of 22 kmph. and sails back at the rate of 12 kmph. The average rate of sailing is ?
Answers.
A) 5 km/hr  B) 12 km/hr  C) 16 km/hr  D) 25 km/hr  E) None
Answer   Average = ( 2uv / u +v ) km/hr   = ( 2 x 22 x 12 ) / (22 +12 ) km/hr.   = 16 km/hr.   16 km/hrorrect Option: 16 km/hr
<result>C</result>
A ship sails out to a mark at the rate of 22 kmph. and sails back at the rate of 12 kmph. The average rate of sailing is ?