Question

4. Sum of Rs400 is in the form of denominations of Rs10 and Rs20. If the total number of noten is 30 and there are *
ten rupee notes represent the given information in terms of x.​

Answer 1

Answer:

let no. of 10 rupee note be X

let no. of 20 rupee note be y

10x + 20y = 400

x + 2y = 40. (1)

x + y = 30. (2)

on equating 1 and 2

x = 20

y= 10