Quantitative Aptitude - Arithmetic Ability Questions

The sum of a non-zero number and 4 times its reciprocal is 17/2. What is the number?

A taxi going at 90 km/hr takes 35 minutes to travel a certain distance. By how much should it increase its speed (in km/hr) to travel the same distance in 21 minutes?

If the elevation of the Sun changes from 30° to 60° , then the difference between the lengths of shadows of a pole 15 m high, is

A's income is 25% more than B's income. B's income is what percent of A's income?

If aq-r+br-p-cp-q, then find the value of (pa + qp + rc) is

ΔXYZ is similar to ΔPQR. If ratio of perimeters of ΔXYZ : ΔPQR is 3:2 and if PQ = 6 cm then what is the length of XY (in cm)?

Find the area (in sq.cm) of a semi-circle of radius 7 cm

If the length of the side of an equilateral triangle is 6 cm, what is its area?