A pipe can fill a tank in 6 hours. Another pipe can empty the filled tank in 30 hours. If both the pipes are opened simultaneously, then the time (in hours) in which the tank will be two-third filled, is
A15
B10
C20
D5
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A and B can do a piece of work in 28 days and 35 days, respectively. They work on alternate days starting with A till the work gets completed. How long (in days) would it take A and B to complete the work?
10 men and 6 women can do a piece of work in 4 days, whereas 12 men and 18 women can do it in 2 days. Find the ratio of the daily work done by a man to that done by a woman, respectively.
ഒരു ജോലി പൂർത്തിയാക്കാൻ A ക്ക് 40 ദിവസം വേണം . അതേ ജോലി A യും B യും ഒരുമിച്ചു ചെയ്തു തീർക്കുവാൻ എട്ടു ദിവസം മതി എങ്കിൽ ആ ജോലി ഒറ്റയ്ക്ക് ചെയ്തു തീർക്കുന്നതിന് B യ്ക്ക് എത്ര ദിവസം വേണം ?
The amount of money earned on a job is directly proportional to the number of hours worked. If INR 324 is earned in 6 hours, then how much money (in INR ) will be earned in 29 hours of work?
A car covers 40% of a certain distance at a pace of 20 km/h and the remaining distance at a pace of 30 km/h. What is the average speed of the car for the entire journey?