Question

A sum of rupees 800 is in the form of denominations of rupees 10 and rupees 20.if the total no. Of notes is 50 find the number of notes of each types?

Answer 1

Answer:

Let the no of 10 rupees note be x

Then the no of 20 rupees note be (50-x)

The value of 10 rupees notes =

10✖x=10x

The value of 20 rupees notes =

20 ✖ (50-x)= 1000-20x

The total amount = 800

10x-20x-1000=800

-10x=800-1000

-10x=-200

x=-200/-10

x=20

Therefore there are 20 notes of 10 rupees notes and 30 notes of 20 rulers notes.

Hope it helps