Quantitative Aptitude - Arithmetic Ability Questions

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?

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?

Sum of twice a fraction and 5 times its reciprocal is 7. What is the fraction?

A kite is flying at a height of 50m. If the length of string is 100 m then the inclination of string to the horizontal ground in degree measures is

Triangle ΔXYZ is similar to ΔPQR. If XY:PQ=5:1. If Area of ΔPQR is 5 sq cm, what is the area (in sq cm) of ΔXYZ?

If the measure of the interior angle of a regular polygon is 100 deg greater than the measure of its exterior angle then how many sides does it have?

Two trains are moving in the same direction at the speed of 24 km/hr and 50 km/hr. The time taken by faster train to cross a man sitting in the slower train is 72 seconds. What will be the length (in metres) of the faster train?

A sum becomes 1.69 times of itself in 2 years when invested at compound interest. What is the per annum rate of interest (in percentage)?