Quantitative Aptitude - Arithmetic Ability Questions

T is a point on the common tangents at P of two circles and if TA and TB are resectively the other tangents at A and B to the two circles drawn from the point T then

Cost price of a cooler is Rs 8400. If the profit percentage is 26%, then what is the selling price (in Rs) of the cooler?

Which one of the following combination of measurements can form the sides of a triangle?

15 small rods, each of length 23 2/7 m are joined to make a big rod. What then is the length of the big rod?

The value of k, for which the quadratic equation 4x2 + 4√3x + k = 0 has equal roots is

Product of digits of a 2-digit number is 18. If we add 63 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

If the radius (r) of a circle is increased by 'x' units, what is the number of units by which the circumstance of the circle is increased?

A factory buys 7 machines. 2 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 56000, Rs 45000 and Rs 30000 respectively. Calculate the average cost of these machines.