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A and B can complete a work in 20 days and 30 days respectively. If they work together for 10 days, how much of the work is left?

A. 1/3
Posted in:  Time & Work -  Aptitude -  Mathematics

What is the solution to the system of equations: 2x + 3y = 6 and x - y = 1?

C. (1,2)
Posted in:  Linear Equations -  Algebra -  Mathematics

A can do a work in 15 days, B can do it in 20 days, and C can do it in 30 days. If they work together, how long will it take to complete the work?

A. 6 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

If the equations 3x + 4y = 12 and 6x + 8y = 24 are given, what can be concluded about these lines?

C. THEY ARE THE SAME LINE.
Posted in:  Linear Equations -  Algebra -  Mathematics

A and B can complete a piece of work in 12 days. If A works alone for 4 days and then B works alone for 8 days, how many days will it take for A and B to finish the remaining work together?

A. 2 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics