Question

a sum of 500 rupees is in the form of denominations of 5 rupees and 10 rupees if the total number of nodes is 90 find the number of notes of each denomination in let the number of 5 rupees notes VX then the number of 10 rupees notes is equals to 90 - x​

Answer 1

Answer:

5 rs notes = 80

10 rs notes = 10

Step-by-step explanation:

total number of notes = 90

let number of 5 rs notes be x

number of 10 rs notes be 90 - x

total amount is 500

5x + 10(90 - x) = 500

5x + 900 - 10x = 500

900 - 500 = 10x - 5x

400 = 5x

x = 400/5

x = 80

5 rs notes = x = 80

10 rs notes = 90 - x = 90 - 80 = 10