Quantitative Aptitude - Arithmetic Ability Questions

What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?

Coefficient of x2 in (x + 9)(6 -­ 4x) is

Two labourers A and B are paid a total of Rs 650 per day. If A is paid 160 percent of what is paid to B, how much (in Rs) is B paid?

If Sumita earns 75/4% more than her boyfriend, find the approximate % her boyfriend earns less than Sunita.

The simplest value of 38-212+20318-227+45 is

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is 30 deg. Assuming that there is no slack in the string, then what is the height (in metres) of the kite?

What is the reflection of the point (6, -3) in the line y = 2?

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?