Quantitative Aptitude - Arithmetic Ability Questions

If x2 – 16x – 59 = 0, then what is the value of (x – 6)2 + [1/(x – 6)2]?

At what percentage above the cost price must an article be marked so as to gain 33% after allowing a customer a discount of 5%?

Find the area (in cm2) of a semi-circle of radius 28 cm.

The value of -261+(-380)-(-521)+821-(-121)

If the ratio of cost price and selling price be 10:11, then the profit percentage is

The average of three numbers is 40. First number is 4/3 of the third number. If third number is 20 less than second number, then what is the value of second number?

The sum of a non-zero number and ten times its reciprocal is 7. Find the number.

A new topic named Problem Solving was also introduced and it was decided that 10% time of all topics except Arithmetic will be devoted to it. What will be the central angle (in degrees) made by Problem Solving in the new pie chart?