Question

A sum of Rs 500 is in the form ofdenominatio of Rs 5 and Rs 10 . If the total number of notes is 90 find the nymb of notes of each type​

Answer 1

Step-by-step explanation:

Solution :

Let the number of ₹ 5 notes = x

∴ The number of ₹10 notes = 90-x

Value of ₹ 5 notes= x \times×₹5 = ₹ 5x

an the value of ₹10 notes = (90-x)\times×₹10 = ₹(900-10x)

∴Total value of all the notes = ₹500

∴5x+(900-10x)=500∴5x+(900−10x)=500

⇒5x+900-10x=500⇒5x+900−10x=500

⇒-5x=500-900⇒−5x=500−900

⇒-5x=-400⇒−5x=−400

⇒x= -400/5

⇒x=80

∴ The number of ₹ 5 notes = x = 80 and

The number of ₹ 10 notes = 90-x = 90-80 = 10.

I hope it will help you :)