Quantitative Aptitude - Arithmetic Ability Questions

Find the fraction which bears the same ratio to 1/27 that 3/7 does to 5/9 .

The numbers x, y, z are respectively proportional to 2, 3, 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax­-8, then a is

If x2 + ax + b, when divided by x + 3, leaves a remainder of -1 and x2 + bx + a, when divided by x - 3, leaves a remainder of 39, then a+ b = ?

If (x - 13)2 + (y - 4)2 = 0, then the value of y + xy - x ?

If  x = 2+3,then what is the value of 2x + 12x ?

X can do a piece of work in 'p' days and Y can do the same work in 'q' days . Then the number of days in which X and Y can together do that work is

Three pipe P, Q and R can fill a tank in 12 minutes, 18 minutesand 24 minutes respectively. The pipe R is closed 12 minutesbefore the tank is filled. In what time the tank is full?

If 9x - 6(3 - x) = 12, then the value of x is