Question
X, Y, and Z alone can complete a language translation in
60, 90, and 36 days respectively. They started working together, but after 5 days, Z left the job, and 20 days before completion, X also left the job. In how many days is the translation completed?Solution
ATQ, Let the total work = 180 units (LCM of 60, 90, and 36) Amount of work done by X alone in one day = 180/60 = 3 units Amount of work done by Y alone in one day = 180/90 = 2 units Amount of work done by Z alone in one day = 180/36 = 5 units Amount of work done by X, Y, and Z together in 5 days = 5 × (3 + 2 + 5) = 50 units Amount of work done by Y alone in 20 days = 20 × 2 = 40 units Remaining work = 180 – 50 – 40 = 90 units Time taken by X and Y together to complete 90 units work = 90/(3 + 2) = 18 days So the total time taken to complete the translation = 5 + 20 + 18 = 43 days
In the question below, three sentences are given, each divided into four parts, which may or may not contain grammatical errors. From the options, choo...
In the following questions, each sentence is divided into four parts, which are labelled a, b, c, and d, one of these parts may contain an error. If th...
We raced hurriedly (1) up gravel (2) hillsides with stomach- churning (3) vertiginous views (4) all around.
...Each boy was given (a) / a toy as a parting gift, (b) / which made them happy. (c) / No error (d)
Read the given sentence to find out whether there are any grammatical/contextual errors in it. The errors, if any, will be in two of the phrases of the...
Find the appropriate answer.
Everyone knows that (1)/ the Earth revolves around the sun, (2)/ but there are still some people (3)/ who denies it. (4)
The postman travelled by the cycle, often wading through (1)/ swamps or passed through jungles (2)/in order to reach the villages (3)/ No error (4)
They also lay claim to being the only brothers to finish first and second in the same race.
If we evince a little interest and involvement in our neighbourhood, we will discover a exciting world.
Relevant for Exams:
