Quantitative Aptitude - Arithmetic Ability Questions

If x + y = 3, then what is the value of x3 + y3 + 9xy?

If x – 4y = 0 and x + 2y = 24, then what is the value of (2x + 3y)/(2x – 3y)?

For triangle PQR, what is the equation of altitude PS if co­ordinates of P, Q and R are (5,1), (0,­4) and (­2,3) respectively?

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?

A discount of 45% on an article is equal to the discount of 65% on other article. What is the respective ratio of the marked price of both the articles?

When 0.363636.....is converted into a fraction, then the result is _____.

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1

Find out the odd word/letters/number/number pair from the given alternatives.