Quantitative Aptitude - Arithmetic Ability Questions

If the ratio of marked price and selling price is 11 : 10, then what is the discount percentage?

The angles of elevation of top and bottom of a flag kept on a flag post from 30 metres distance, are 45 and 30 deg respectively. Height of the flag is [taking √3 = 1.732]

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 28090, and Rs 29775.4 respectively, what is the rate of interest?

Ramu can row 9 kmph in still water. It takes him twice as long to row up as to row down. Find the rate of stream.

What is the area (in sq cm) of a regular hexagon of side 9 cm?

If 3 dozen guavas cost Rs. 90, how many guavas can be bought for Rs. 240?

Find the fraction which bears the same ratio to 1/27 that 3/7 does to 5/9 .

What is the area (in sq cm) of a rectangle of perimeter 48 cm and breadth 10 cm?