Question

a man wanted to exchange 1000 rs in two types of notes in 5 rs and 10 rs if he got 180 notes find the no of notes of each kind​

Answer 1

Answer:

Step-by-step explanation:

let the no. of ₹5 notes be x and ₹ 10 notes be y.

Therefore, x+y=180

and 5x+10y=1000

multiplying (x+y=180) by 5,we get

5x+5y=900

5x+10y=1000

-5y=-100

y=20

Therefore,x=160

Hence,₹5 notes were 20 in number while ₹10 notes were 160 in number.