Lakshmi is a cashier in a bank. She has currency notes of denominations Rs 100, Rs 50 and Rs 10, respectively. The ratio of the number of these notes is `2:3:5`. The total cash with Lakshmi is Rs. 4,00,000. How many notes of each denomination does she have?

I have a total of Rs 300 in coins of denomination Rs 1, Rs 2 and Rs 5, the number of Rs 2 coins is 3 times the numbers of Rs 5 coins. The total number of coins is 160. How many coins of cash denomination are with me?

A tent is in the shape of a cylinder surmounted by a conical top.If the height and diameter of the cylindrical part are 2.1m and 4 m respectively,and the slant height of the top is 2.8 m,find the area of the canvas used for making the tent.Also find the cost of the canvas of the tent at the rate of Rs.500 per m^2 (Note that the base of the will not be covered with canvas).

The organisers of an eassy competition decide that a winner in the competition gets a prize of Rs 100 and a participant who does not win gets a prize of Rs. 25. The total prize money distributed is Rs 3,000. Find the number of winners, if the total number of participants is 63.

Form the pair of linear equations in the following problems,and find their solutions(if they exist) by the elimination method:(iv)Meena went to a bank to withdraw Rs.2000.She asked the cashier to give her Rs.50 and Rs.100 notes only.Meena got 25 notes in all.Find how many notes of Rs 50 and Rs.100 she received.

Hasan buys two kinds of cloth materials for school uniforms, shirt material that costs him Rs 50 per metre and trouser material that costs him Rs 90 per metre. For every 2 meteres of the trousers material he buys 3 metres of the shirt materials. He sells the materials at 12% and 10% profit respectively. His total sale is Rs 36,660. How much trouser material did he buy?