Question
Jack is twice efficient as Jill and Jill can do a piece
of work in 30 days. Jill started the work and after a few days Jack joined him. They completed the work in 22 days. From the starting, for how many days they worked together?Solution
Jill Jack Efficiency 1 : 2 Jill can do this job in 30 days so let total work = 1×30 = 30 units So let Jill work alone for x days and they work together for remaining i,e. (22-x) Hence 1×x+3(22-x) = 30 x +66 - 3x = 30 36 = 2x So x = 18 days So they work togethr for (22-x) i.e . 4 days
During the winters the polar bear goes without food by nearly five to six months.
A formal expression of disapproval
"It's not a good idea to kick the can down the road and let the next generation solve the global warming problem."
Charley Horse
In each question below, a sentence is given with an idiom/phrase printed in bold type. That part may contain a grammatical error. Each sentence is follo...
The robber murdered the woman in cold blood for the sake of the jewels.
Select the most appropriate meaning of the given idiom.
leave no stone unturned
In each of the following questions, an idiomatic expression/a proverb has been underlined – followed by four alternatives. Choose the one which best ...
The heating system is the bane of my life as it always keeps breaking down.
"The report had more holes than Swiss cheese , making it difficult to trust the conclusions drawn from it."
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