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576 . A train which has 390 m long, is running 45 kmph. In what time will it cross a person moving at 9 kmph in same direction ?
A. 24 sec B. 29 sec
C. 33 sec D. 39 sec

577 . Two persons start running simultaneously around a circular track of length 400 m from the same point at speeds of 15 kmph and 25 kmph. When will they meet for the first time any where on the track
A. 29 sec B. 32 sec
C. 36 sec D. 42 sec

578 . What is the amount of equal installment, if a sum of Rs. 1428 due 2 years hence has to be completely repaid in 2 equal annual installments starting next year?.
A. 700 B. 800
C. 650 D. cannot be determined

579 . A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
A. 8.5 km/hr   B. 10 km/hr
C. 12.5 km/hr D. 9 km/hr

580 . In one hour, a boat goes 14 km/hr along the stream and 8 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
A. 12 km/hr B. 11 km/hr
C. 10 km/hr D. 8 km/hr