Question
A tank has three pipes, X, Y, and Z. X can fill the tank
in 8 hours, Y can fill it in 12 hours, and Z can empty it in 6 hours. If X, Y, and Z are opened together, how long will it take to fill the tank?Solution
Work done by X in 1 hour = 1/8 Work done by Y in 1 hour = 1/12 Work done by Z in 1 hour (emptying) = -1/6 Net work in 1 hour = (1/8) + (1/12) - (1/6) Taking LCM of 8, 12, and 6 = 24, Net work = (3/24) + (2/24) - (4/24) = 1/24 The tank will be filled in 24 hours.
Find the appropriate word.
In Argentina in 2014, people first discovered Titanosaurs, ______ are dinosaurs.
Fill in blank 1 with the appropriate word from the options.
Find out the appropriate word in 1.
Select the most appropriate option for blank No. 4.
Find the appropriate word.
Blank 27
Choose an appropriate word that fits the blank 200.
Alyssa Healy and her merry bunch will be the team that most squads, including old rival England, will be want to knock off the pedestal.
From the following select the appropriate word to replace number (49) in the above passage.Â
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