question_answer

A man covered a distance of 3990 km partly by air, partly by sea and remaining by land. The time spent in air, on sea and on land is in the ratio 1: 16: 2 and the ratio of average speeds is 20: 1: 3 respectively. If total average speed is 42 km/hr, then the distance covered by sea is _________

A) 1602 kms   

B)                                       1520 kms

C) 1620 kms        

D) 1500 kms

E) None of these