Question

A sum of Rs. 800 is in the form of denominations of Rs.10& Rs.20 . if the total number of notes is 50 , find the number of notesof each type

Answer 1

suppose that the notes of 10 are x so the notes of 20 will be 50-x .
Given
10x + 20(50-x) =800
10x + 1000 - 20x = 800
1000 - 10x = 800
10x = 1000 - 800
10x = 200
x = 20
so the notes of 10 will be 20 and the notes of 20 will be 50 - 20 = 30.

Answer 2

Heya user !!!

Here's the answer you are looking for

⏩ Let there are x ₹10 notes.

Since total number of notes = 50

number of ₹20 notes = (50 - x)

⏩ All the notes add up to ₹800

That means, ₹10(x) + ₹20(50 - x) = ₹800

10x + 1000 - 20x = 800

-20x + 10x = 800 - 1000

-10x = -200

x = 20

⏩ Therefore, there are twenty ₹10 notes and thirty ₹20 notes.



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