Question

A sum of rs 1000 is in a form of denomination of rs 10&20. If the total no. Of notes is 65, find the no of notes of each type

Answer 1

Answer:

30,35

Step-by-step explanation:

let there are x number of 10 rupees note and y number of 20 rupees note

hence x+y=65 ..........(1)

and. 10x+20y=1000 ............(2)

x+y=65

=x=65-y

applying value of x obtained from (1) in (2)

=10(65-y)+20y=1000

=650-10y+20y=1000

=10y=1000-650

=10y=350

=y=350÷10=35

hence x+y=65

=x=65-y

=x=65-35=30