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Quantitative Analysis

Study Notes and Chapters for Quantitative Analysis - Online Preparation for Bank Exams

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Quantitative Analysis requires a lot of practice and hardwork since its an analytical subject. Before becoming an expert one should understand the basics of Quantitative Analysis for Government Bank Job Exams for SBI, RBI, RRB and IBPS. This section gives you all details about the basics of Quantitative Analysis. Here you can get the Free Notes and PDF downloads for Quantitative Analysis to prepare for the Bank PO and Clerical Jobs in India. Our experts are available incase you need any kind of online help to understand any topic or any kind of doubt clearing

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Quantitative Aptitude Free-Study Notes

12. TIME AND WORK


A. If A can do a piece of work in n days, then A's 1 day's work = (1/n).

B. If A’s 1 day's work = (1/n),then A can finish the work in n days.

C. A is thrice as good a workman as B, then:

Ratio of work done by A and B = 3 : 1.
Ratio of times taken by A and B to finish a work = 1 : 3.

D. If the number of men engaged to do a piece of work is changed in the ratio a:b, the time required for the work will be changed in the ratio b:a

E. If A is X times as good a workman as B, then A will take 1/x of the time that B takes to do a certain work.

F. If M1 persons can do `W1' works in D1 days for T1 hours and M2 persons can do `W2' works in D2 days for T2 hours then M1 D1 T1 W2 = M2 D2 T2W1.

G. If A can finish a work in `x' days and B can finish the same work in `y' days, then time taken by both to finish the work is xy / x+y days

H. If A and B together can do a piece of work in x days and A alone can do it in y days then B alone can do it in xy / y-x days

I. If A, B and C can do a work in x,y, and z days respectively, then all of them working together can finish the work in xyz / xy+yz+zx days

J. If two taps A and B take a and b hours resepectively to fill a tank, then the two taps together fill 1/a + 1/b part of the tank in an hour and the entire tank is filled in 1/(1/a+1/b) - ab/(a+b)

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