Question
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and
9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the tank gets filled in 4 hours. Find the time taken by pipe ‘C’ to empty (5/6)th part of the same tank.Solution
Let capacity of the tank = 18 litres (lcm of 6 and 9) Efficiency of pipe ‘A’ = (18/6) = 3 litres/hour Efficiency of pipe ‘B’ = (18/9) = 2 litres/hour Efficiency of all the three pipes together = (18/4) = 4.5 litres/hour Efficiency of pipe ‘C’ = 4.5 – (3 + 2) = (-0.5) litre/hour {Negative sign shows that pipe ‘C’ is an outlet pipe} Required time taken = {(5/6) × 18)}/0.5 = 30 hours
The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
The concert has started when he...
One should understand (a) / the efforts of others, (b) / as much as his owns. (c) / No error (d)
Several Western policy commentators are aghast (1)/as to why India is unwilling to endure some economic pain (2)/to send a loud and clear message that ...
The group of friends was (A)/divided in(B)/ their opinion about (C)/where to go for dinner.(D)
The Army too opposed the embankment, saying it will pose hurdles for their forward movements during military operations.
In the early days, cars were considered (1)/luxury goods and high excise duty was levied on (2)/petrol, but it was lowest on diesel to make it (3)/chea...
Farmers organisations has (1)/also been complaining about (2)/scarcity of fertilizers and (3)/increase in its price (4).
Critics often site the potential (A)/for these funds to trade (B)/at a share price that is not aligned (C)/with the value of the underlying securities (...
Indore retained its prominence even in the 20th Century due to its association with four prominent musicians linked with the city.
He denied to have (A)/any part in writing the information packs (B)/and advertisements and said they (C)/were largely available when he arrived (D).
Relevant for Exams:
