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If the quadratic equation x^2 - 6x + 8 = 0 has roots r1 and r2, what is the sum of the roots?

A. 6
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

A can complete a work in 10 days and B can complete the same work in 15 days. How long will they take to complete the work together?

B. 8 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

If a train travels at a speed of 90 km/h, how far will it travel in 3 hours?

C. 300 KM
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If A can do a piece of work in 20 days and B can do it in 30 days, how much time will they take to finish the work together?

B. 15 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

A cyclist covers a distance of 45 km in 1.5 hours. What is the cyclist's speed?

B. 30 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics