Two pipes, A and B, can fill the tank in 60 hours and 90 hours, respectively. If both the pipes are opened simultaneously, in how many hours will 75% of the tank be filled?
A36
B33
C30
D27
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In a race, an athlete covers a distance of 360 m in 60 sec in the first lap. He covers the second lap of the same length in 180 sec. What is the average speed (in m/sec) of the athlete?
36 ആളുകൾ 25 ദിവസം കൊണ്ട് തീർക്കുന്ന ഒരു ജോലി 15 ആളുകൾ എത്ര ദിവസം കൊണ്ട് തീർക്കും?
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12 ആളുകൾ 10 ദിവസം കൊണ്ട് തീർക്കുന്ന ഒരു ജോലി 15 ആളുകൾ എത്ര കൊണ്ട് ചെയ്തു തീർക്കും?
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