Quantitative Aptitude - Arithmetic Ability Questions

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

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.

Which one of the following is an irrational number?

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

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?