Question
A alone can complete a work in 20 days and S alone can
complete the same work in 30 days. They start the work together, but S left the work 5 days before the completion of work. In how many days, will the work completed?Solution
ATQ, Per day efficiency of A = 1/20 Per day efficiency of S = 1/30 Working together, per day efficiency = (1/20) + (1/30) = (3 + 2)/60 = 5/60 = 1/12 Let together they worked for d days Then, total work gets completed in (d + 5) days [(d/12) + (5/20)] = 1 ⇒ d/12 = 3/4 ⇒ d = 9 Now, d + 5 = 14 ∴ Total work gets completed in 14 days.
An Axe to Grind
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...
Last month, the pre-induction trials were put of by two weeks due to bad weather alerts.
Slap on the Wrist
In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
face t...
Alice is definitely in a pickle as she didn’t meet her last month’s sales target.
Select the correct meaning of the given idiom.
To take to heart
To draw the line
Ask for or request earnestly
Select the most appropriate idiom in the given context to fill in the sentence.
I could make out that the conversation was leading to a fight so ...
