Quantitative Aptitude - Arithmetic Ability Questions

The length of one side and the diagonal of a rectangle are 7 cm and 25 cm respectively. Find its area (in cm²)

If x = 1 + √2 + √3 , then the value of 2x4 - 8x3 - 5x2 + 26x - 28 is

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

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

A balloon leaves from a point P rises at a uniform speed. After 6 minutes, an observer situated at a distance of 450√3 metres from point P observes that angle of elevation of the balloon is 60 deg. Assume that point of observation and point P are on the same level. What is the speed (in m/s) of the balloon?

Which of the following value of 'x' satisfies the equation 814x+4 = 2432x+8?

ΔXYZ is similar to ΔPQR. If ratio of Perimeter of ΔXYZ and Perimeter of ΔPQR is 16:9 and PQ = 3.6 cm, then what is the length(in cm) of XY?

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by