My uncle changed a 1000 rupee cheque from a bank in the from of 5 rupee and 10 rupee notes. If he received 137 notes in total then find the number of 5 rupee notes that he got.

If I change 3 hundred rupee notes in the form of 5 and 10 rupee notes and get 48 notes in total. Let’s find out how many notes of each type I would have.

In how many ways can a person contribute to a charitabe fund out of 10 ten - rupee notes , 5 five -rupee notes, 2 two -rupee notes and 1 one - rupee note ?

The value of the total number of 70 notes (currency) is Rs.590 , in which there are notes of Rs10 and 5. Find the number of each notes.

Find the average income (in rupees) of the workers from the following table :

Today is the Foundation day of our school. Each student of class five will be given pencil and eraser worth 5 rupees. Each student of class six will be given compass worth of 10 rupees. There are x students present in class five, but number of students present in class six is 8 less than the number present in class five. Calculate the amount of money spent for pencils and erasers and also the amount spent for compasses.

A person bought a house for Rs200000 by taking a loan from the bank at a rate of simple interest of 5% per annum and then rented the house. If he can repay his loan with all the interest in 10 years by the income of the houserent, then find the monthly rent of the house.

In Young's double slit experiment the coherent sources are 1.5 mm apart and the fringes are obtained on a screen at a distance 2.5 m from the plane of the sources. If the sources is illuminated with a light of 589.3 nm wavelength , find the number of fringes in the interference pattern thus formed on the screen. Total length of the fringes are 4.9 xx 10 ^(-3) m.

In how many ways can a person contribute to a charitable fund out of 1 ten - rupee , 1 five - rupee , 1 two - rupee and 1 one - rupee notes ?

If 640 rupees is divided between Bishu and Aparna in the ratio of 5 : 3 , find how much each would get.

The monthly income of a man is 24,750 rupees. He pays house rent of 750 rupees and the remaining money is spent for household expenses and the education of children in the ratio of 3 :1 . Find how much money is spent on household expenses.