Question

A sum of ₹ 500 is in the form of denominators of ₹5 and ₹ 10 . If the total number of notes is90 find the number of notes of each denomination . ( Hint : let he number of 5 rupee notes be ' x ' , then number of 10 rupee notes =90-x )​ please anwer it quickly. it's very necessary​

Answer 1

Answer:

There are 80 notes of 5 rupees and 10 notes of 10 rupees.

Step-by-step explanation:

This can be solved as follows-

Let the number of 5 rupee notes be x, so the number of 10 rupee notes will be 90-x ( since the total number of notes is 90)

So, total amount taking together only the 5 rupee notes= 5x

Total amount taking only the 10 rupee notes into consideration - 10 (90-x)

Now, the equation can be formed as follows:

5x + 10( 90-x) = 500

so, 5x + 900 -10x = 500

so, 5x = 400

hence, x = 80