Question

A sum of 500 is in the form of denominations of 5 and 10. If the total number of notes is 90 find the number of notes of each denomination.
(Hint: let the number of 5 rupee notes be 'x', then number of 10 rupee notes = 90-x)​

Answer 1

Answer:

80, 10.

Step-by-step explanation:

Let the number of 5 rupee notes be x.

Let the number of 10 rupee notes be 90 - x.

ATQ,

➵ 5x + 10 ( 90 - x ) = 500

=   5x + 900 - 10x = 500

=   5x - 10x = 500 - 900

=   -5x = -400

=   x = $\frac{-400}{-5}$

=   x = 80.

∴ Number of 5 rupee notes is 80, and 10 rupee notes is ( 90 - 80 ) 10.

Answer 2

Answer:

brother your answer is 10