Master Work & Time for GMAT, GRE, CAT, Competitive exam

master inverse proportion and its distinction from direct proportion by solving work, time, and person problems, including how more workers reduce time and how speed affects duration.

Learn a compact formula for work and time problems involving persons, days, and hours, and apply it to scenarios like multiple workers completing houses with varying days and hours.

Master how shortcut formulas and the LCM method solve common work-time problems, including the ultimate method, with hands-on practice on work units and days across multiple workers.

Master two-person work problems by using together time and a known solo time to determine the other person’s days to finish the work, with a practical one-day-work formula and examples.

Learn to solve three-person work problems using a short formula and LTM technique. Determine ABC's solo days and B-C, A-B, or A-C pair times.

Understand efficiency as the rate of work, i.e., units produced per day, and apply the inverse proportional relationship between efficiency and time using efficiency and time ratios.

Explore practice problems on work and time, calculating efficiency ratios and daily output to determine total work and solo completion times for A, B, and others.

Solve skill problems on efficiency by analyzing work rates of multiple workers, deriving efficiency ratios, daily work, and each person’s solo time to finish a job.

Learn to solve work problems stated as fractions, like half or two fifths, and use the shortcut x*y/(x+y) or the lc method to find days alone and together.

Learn to solve work-and-time problems using fractions, determine individual and joint completion days, and apply unit-work and shortcut methods to see who finishes first.

Learn to solve work and time problems with people leaving or joining by setting total work from given days, calculating daily rates and efficiency, and finishing the remaining work.

Explore leaving and joining work problems by computing daily work rates, total work units, and cycle-based schedules to determine total days when workers alternate and rejoin.

Apply a shortcut formula to work problems involving men, women, and boys to finish the same work in the same number of days.

Explore problems involving men and boys, establish that one man equals two boys, and apply inverse proportion to compute days for mixed crews.

Learn to solve work-time problems with men and boys by converting days to hours, using inverse proportion and the a x/(a−x) shortcut to compute days.

Discover how to determine worker efficiency, form efficiency ratios, and fairly divide wages according to work contributed using daily output and time-based problems.

discover a special case of work time problems: two workers together finish in X days while solo times are X plus a and X plus b, with X = sqrt(a*b).

Master pipe and cistern problems using the time-involved method, treating inlet and outlet pipes, leaks, and combined rates to fill or empty the cistern efficiently.

Learn to solve pipes and cistern type-1 problems by applying the rate formula for simultaneous filling or emptying and a logical method for quick solutions.

solve type two pipes and cistern problems by comparing fill and empty rates of pipes A, B, and C, computing total capacity and the time to fill the tank.

Analyze pipe and cistern problems by comparing fill rates with and without leaks, compute system capacity, and determine net rates when taps and leaks operate together.

Learn to solve pipes and cistern time problems, using efficiency ratios, filling and emptying rates, and combined flow to determine tank capacity.

Master the work and time problems by analyzing leaving and joining, calculating daily work rates, and solving multi-person collaboration scenarios with clear step-by-step reasoning.

Analyze GMAT solutions Q4, Q5, Q6 using work and time problems with pipes and tanks, calculating net cycle rates, combined work, and inverse proportions to determine days and cycles.

Analyze a work-rate scenario: with 10 workers, after 15 days 30% is complete; determine extra days and workers needed to finish 70% in 15 days.

Solve work and time problems using man-hours and proportional reasoning. This lecture covers GMAT solutions Q8–Q10 with wall-building and manpower calculations.