An aero plane flying horizontally at a height of 3 km. Above the ground is observed at a certain point on earth to subtend an angle of 60⁰. After 15 sec flight, its angle of elevation is changed to 30⁰. The speed of the aero plane (taking √3=1.732)

The following pie chart gives the central angles of the sectors representing the number of cameras sold form a shop from July to November in a certain Year.

what percentage are the sales in July of the total sales from July to November

Which one of the following costs more?

I. 200 packets of ₹ 250 each

II . 20 dozens of ₹ 250 each

if a=26 and b=22, then the value of   $${{a^3-b^3}\over {a^2-b^2}}-{3ab\over a+b}$$ is

On subtracting 10 from a number, that number is decreased by 20%, then what is 60% of that number?

The difference between the simple interest and the compound interest on a certain amount at 5% for two years is 25, what is the amount?

A retailer purchases a grinder at a discount of 15% of the whole seller and sells it for ₹1955 at a profit of 15%. The amount of discount received by the retailer from the whole seller was

₹ 1,000 is invested at 5% per annum simple interest. If the interest is added to the Aprincipal after every 10 years, the amount will become 2,000 after