Question

a sum of rupees 500 is in the form of denomination of rupees 5 and rupees 10 if the total number of notes is 90 find the number of notes of each type​

Answer 1

Answer:

80

Step-by-step explanation:

Let the number of 5 rupee notes be x,then

The number of 10 rupee notes =90−x

Then ,according to the question

5x+10(90−x)=500

5x+900−10x=500

5x=400

x=80

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

Answer 2

Answer:

Let number of notes of 5 rupees be x

the number of notes of 10 rupees be (90-x)

Rupees of notes of 5 = 5×X= 5x

rupees of notes of 10= 10(90-x)

=900-10x

5x+900-10x=500

-5x=500-900

-5x=-400

minus = minus, cancel

5x=400

x=400÷5

x=80

Number of notea of rupees 5= x=80

number of notes of rupees 10=(90-x)

=(90-80)

Number of notes of 10 rupees = 10