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For the quadratic equation 2x² + 4x + k = 0 to have real roots, what must be the condition on k?

B. K ? 4
Posted in:  Quadratic Equations -  Algebra -  Mathematics

A can complete a work in 10 days, while B can complete the same work in 15 days. How long will it take for both A and B to complete the work together?

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

If a person walks at a speed of 4 km/h, how long will it take to walk 16 km?

C. 4 HOURS
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

For the quadratic equation 2x^2 - 4x + k = 0 to have real roots, what must be the condition on k?

C. K ? 8
Posted in:  Quadratic Equations -  Algebra -  Mathematics

A and B can complete a work in 24 days together. If A alone can do it in 36 days, how long will B take to complete the work alone?

A. 48 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics