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Solve the following system of equations using substitution: x + 2y = 8 and y = 3x - 4. What is the value of x?

C. 4
Posted in:  Linear Equations -  Algebra -  Mathematics

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

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

What is the sum of the roots of the quadratic equation x² - 5x + 6 = 0?

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

If one root of the quadratic equation x² + 4x + k = 0 is 2, what is the value of k?

B. -8
Posted in:  Quadratic Equations -  Algebra -  Mathematics

A car travels 150 km in 3 hours. What is its speed in km/h?

B. 60 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics