1). 3.75 kmph2). 0.6 kmph3). 5 kmph4). 1.5 kmph

1.	1). 3.75 kmph2). 0.6 kmph3). 5 kmph4). 1.5 kmph
Answer» Distance from the shore(d) = 45 km Water enter per hour in ship by hole = 4¼ tonnes in 15 min = 4.25/0.25 = 17 tonnes (? 1 HR = 60 min) Water leaving the ship per hour by pump = 12 tonnes/hr Amount of water REMAINING at the end of the hour = 17 - 12 = 5 tonnes/hr Time TAKEN to sink the ship = 60/5 = 12 hr Average speed of sailing to reach the shore just before = Distance/Time = 45/12 = 3.75 km/hr ∴ The average speed of sailing to reach the shore just before sink = 3.75 km/hr

Answer»

Distance from the shore(d) = 45 km

Water enter per hour in ship by hole = 4¼ tonnes in 15 min = 4.25/0.25 = 17 tonnes

(? 1 HR = 60 min)

Water leaving the ship per hour by pump = 12 tonnes/hr

Amount of water REMAINING at the end of the hour = 17 - 12 = 5 tonnes/hr

Time TAKEN to sink the ship = 60/5 = 12 hr

Average speed of sailing to reach the shore just before = Distance/Time = 45/12 = 3.75 km/hr

∴ The average speed of sailing to reach the shore just before sink = 3.75 km/hr

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