MBA Quantitative Aptitude Basic Concepts – Time and Work

Prepare the concepts of Time and Work chapter at to ace the Quantitative aptitude section. Learn the basic concepts to prepare well for CAT, CMAT, MAT, XAT, IIFT, SNAP etc exams.

Created On: May 24, 2016 15:17 IST

Dear Aspirants,

Let us start understanding another significant concept of arithmetic chapter, ‘Time and Work’ which is an important part of MBA entrance. Although, you might not get direct questions from this chapter in the CAT, MAT, CMAT, XAT and other entrances, but the application of this concept holds strategic importance in enhancing your percentile.

This concept not only helps you in escalating your scores in the Quantitative Aptitude Section, but would also increase your scores in the Data Interpretation section.

Acquire a basic understanding of concepts which are witnessed frequently in the entrances from the ‘Time and Work’ chapter in order to solve all the questions associated with this chapter.

The following table gives you the various corresponding efficiency values for n

Relationship between efficiency and time

Efficiency and time are inversely proportional. That is if X is 50% efficient as Y, then X takes twice the time taken by Y or if X is twice efficient as Y then X takes half the time taken by Y to finish the job.

Time and efficiency in ratio

The ratio of time taken to work is equal to the ratio of the inverse or reciprocals of the efficiency and vice versa.

Relationship between time, constant work and efficiency:

More formulas:

Negative work:

Equating work:

We hope that these concepts will aid you in your preparation of Time and Work chapter.

For more updates on the quantitative aptitude section of MBA entrance exam, keep visiting


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