Question

A sum of RS 5000 is in the form of denomination of RS 50 and RS 100 if the total number of notes is 90 find the number of notes of each type​

Answer 1

Step-by-step explanation:

number of 5 rupees note=80

number of 10 rupees note=10

Answer 2

their are 80 50rs notes and 10 100rs notes.

Step-by-step explanation:

Let us assume rs. 50 notes as X and rs. 100 notes as y.

50x + 100y = 5000 --------1

X + y = 90 -----------------2

let us multiple eq. 2 by 100

100x + 100y = 9000--------3

let us subtract eq. 1 by 2

we get,

X = 80

substituting the value of X in eq. 2

we get,

y = 10