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 man covered a distance of 3990 km partly by air, partly by sea and r

1.	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
Answer» C. 1620 kms

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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 _________

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