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If A can do a piece of work in 12 days and B can do it in 18 days, how long will it take for both A and B to complete the work together?

A. 7.2 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

A can do a piece of work in 12 days, B can do it in 15 days, and C can do it in 20 days. If they work together, how long will it take to complete the work?

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

If the roots of the quadratic equation x² + px + q = 0 are 3 and -2, what is the value of p?

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

Which of the following equations has roots that are both real and equal?

A. X² - 4X + 4 = 0
Posted in:  Quadratic Equations -  Algebra -  Mathematics

If the roots of the quadratic equation ax^2 + bx + c = 0 are 3 and 4, what is the value of a if b = -7 and c = 12?

A. 1
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics