If a train travels at a speed of 90 km/h, how long will it take to cover a distance of 270 km?

B. 3 HOURS

For the quadratic equation x² + 4x + 4 = 0, what are the roots?

A. -2, -2
Posted in:  Quadratic Equations -  Algebra -  Mathematics

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

C. 300 KM

A can do a work in 8 days, B can do it in 12 days, and C can do it in 24 days. If they all work together, how long will it take to complete the work?

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

What is the H.C.F. of the polynomials 2x^2 + 4x and 4x^2 + 8x?

A. 2X