Question

a purse contains rs 5000 in notes of denominations of rs 100 and rd 500 if the total number of notes is 30 find the number of notes of each denominations.

Answer 1

Let, no. of 500 rupee notes be x.
So, no. of 100 rupee notes = 30 - x
Value of 500 rupee notes = Rs. 500x
Value of 100 rupee notes = Rs. 100 ( 30 - x )
                                         = Rs. 3000 - 100x
ATQ, 500x + 300 - 100x = 5000
         400x = 5000 - 3000
         x = 2000/400
            = 5
So, No. of 500 rupee notes = 5 ( ANS )
      No. of 100 rupee notes = 30 - 5
                                            = 25 ( ANS )



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Answer 2

Answer:

Step-by-step explanation:

Let the no. of 100 rupee notes be x

The number of 500 rupee notes if 100 rupee notes are x=30-x

=100x+500(30-x)=5000

=100x+15000-500x=5000

=100x-500x=5000-15000

=100x-500x= -10000

= -400x= -10000

=x=-10000/-400

=x=25

So,x=25 which means no. of 100 rupee notes=25

Then 500 rupee notes=30-x=30-25=5

ANSWER-100 rupee notes=25

500 rupee notes=5