SSC CGL 2017 NEWS
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Time and Rate of Work related problems are one of the tricky QA problems in SSC CGL. Lately, with change in pattern of the examination the section has turned to be one of the most asked sections.
Thorough concentration is needed and candidates must pay due attention to all the preparation tips and short cuts in order to perform well during the examination.
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The various types of questions that can be framed from time and rate of work concepts and their corresponding formulas are given.
P1 * D1 * W1 = P2 * D2 * W2
P1 * D1 * T1 * W1 = P2 * D2 * T2 * W2
P1 * D1 * T1 * E1 * W1 = P2 * D2 * T2 * E2 * W2
Then A and B working together will do the same work in
[(X*Y*Z) / (XY + YZ + ZX)] days
(X*Y) / (X-Y) days
|Number of days required to complete the work||Work that can be done per day||Efficiency in Percent|
Understanding the questions thoroughly is the trickiest part and thus possess a challenge. Candidates must ensure they understand every bit of the question and then initiate the solution procedure.
Time wastage is one more area of concern for many students as rate of work problems tend to be misleading and hence might take up to 3 attempts if candidates are lacking in practice. Therefore practice under proper guidance is vital.
Techniques involved in time and work related problems might seem intimidating. Candidates must therefore initiate and complete learning and revision of these concepts much before the examination.
|A contractor undertook to finish a certain work in 124 days and employed 120 men. After 64 days, he found that he had already done 2/3 of the work. How many men can be discharged now so that the work may finish in time?|
|Pipe ‘A’ and ‘B’ can fill a cistern in 15 and 20 hrs respectively and pipe ‘C’ can empty it in 10 hrs. If all the three are simultaneously opened, then the time required for the cistern to be filled is ?|
|If two persons, with equal abilities, can do two jobs in two days, then 100 persons with equal abilities can do 100 similar jobs in|
|A and B together can do a piece of work in 12 days which B and C together can do in 16 days. After A has been working at it for 5 days and B for 7 days, C finishes it in 13 days. In how many days B could finish the work?|
|Alex can write 120 pages in 24 hrs. Amit and Bobby together can write 225 pages in 25 hrs. In what time can Bobby write 196 pages?|
|A and B together can complete a piece of work in 3 days. They start together. But, after 2 days, B left the work. If the work is completed after 2 more days, B alone could do the work in|
|If 12 men or 18 women can reap a field in 14 days, then working at the same rate, 8 men and 16 women can reap the same field in:|
|A can do a work in 10 days and B in 20 days. If they together work on it for 5 days, then the fraction of the work that is left is:|
|Raj can finish a work in 24 days, Sashi can finish the work in 9 days and Mike can finish the work in 12 days. Sashi and Mike start the work but are forced to leave after 3 days. The remaining work can be finished by Raj in?|
|Anil can do a job in 10 days. Babu can do the same job in 5 days. In how many days they can complete the job if they work together?|
|Anil and Babu can do a job in 8 days. Babu and Charan can do the same job in 12 days. Anil, Babu and Charan can do the job in 6 days. In how many days Anil and Charan can complete the job?|
|Ashu and Babu together can complete a task in 20 days. Babu and Charu together can complete the same task in 30 days. Ashu and Charu together can complete the same task in 30 days. What is the respective ratio of the number of days taken by Ashu when completing the same task alone to the number of days taken by Charu when completing the same task alone?|
|Name of the book||Author||Publisher||ISBN|
|Quantitative Aptitude for Competitive Examinations||R.S. Aggarwal||S.Chand||8121924987|
|SSC Mathematics Topic-wise Latest 32 Solved Papers (2010-2016)||Disha Experts Team||Disha Publications||9386323230|
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