Question

A sum of rupees 500 is in the form of demo minationsmof rupees5 and rupees 10. If the total number of notes is 90find the number of notes each type

Answer 1

Answer:

let X nots be of rs5

90-x nots of rs 10

now total domination 500=5x+900-10x

-400=-5x so X

80

so 5 rs notes are 80

and 10 rs notes= 10

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Answer 2

Answer:

80 of 5 rupees & 10 of 10 rupees

Step-by-step explanation:

Let the number of 5 rupee notes be x then the number of 10 rupee notes = 90-x

So , from question :

5x + (90-x)10 = 500

5x + 900 - 10x = 500

400 = 5x

x = 80