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A can finish a job in 15 hours, B can finish the same job in 10 hours. If they work together for 3 hours, how much of the job is left?

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

If the roots of the quadratic equation ax^2 + bx + c = 0 are 3 and -2, what is the value of b in terms of a?

B. 5A
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

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 sum of the roots of the quadratic equation x^2 - 5x + 6 = 0?

A. 5
Posted in:  Quadratic Equations -  Algebra -  Mathematics

If C can finish a work in 24 days and D can finish the same work in 36 days, how long will it take for them to complete the work together?

A. 14.4 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics