Question

a man went to a reserve Bank of India with the note of 500 he asked the cashier to give him 5 and 10 notes in return the cashier gave him 70 notes in all find how many hours of 5 and 10 did the man recieve​

Answer 1

let no. of 10 notes be x

no. of 5 notes be y

10x + 5y = 500

2x+y = 100......[1]

x + y = 70   ......[2]

subtract equation 2 from equation 1

x = 30

y = 40

Answer 2

Answer:

Step-by-step explanation:

Let the no. of rs 5 notes be x and no. of rs 10 notes be y

5x+10y=500

on reducing, x+2y=100

x+y=70

x+2y=100

(-)

x+y=70

y=30

x=40