In a shop shirt are usually sold at 40% above the cost price. During a sale, the shopkeeper offers a discount of 10% off the usual selling price. If he man ages to sell 72 shirts for ₹ 13,608 then his cost price per shirt, ( in ₹) is 

If the average of 11, 23 and x is 40, then what is the value of x?

PT is a tangent at the point R on a circle with centre O. SQ is a diameter, which when produced meets the tangent PT at P. If ∠SPT=32°, then what will be the measure of ∠QRP?

A bag contains rupee, 50 - paise and 25 - paise coins in the ratio 2 : 3 : 4. If the total amount in the bag is Rs . 45, find the number of 50 - paise coins. 

Two numbers are respectively 20% and 50% of a third number. What percent is the first number of the second?

What is the value of $$ {cosecθ\sqrt{1-cos^2θ}}$$.

A boat takes half time in moving a certain distance downstream than upstream. what is the ratio between the rate in still water and the rate of current? 

Directions : Given line graph shows the data of male & female population in 5 different cities. Read the data carefully and answer the questions.

What is average of male population in all cities?