Question

Q17. A lady went to a bank with Rs. 1.00.000. She asked the cashier to give her Rs. 500 and Rs.
1.000 currency notes in return. She got 175 currency notes in all. Find the number of each kind
of currency​

Answer 1

Step-by-step explanation:

1. Let the the number of 500rs note be x and number of 1000rs note be y
2. Therefore x+y = 175...... (i) { total number of notes}
3. 500x + 1000y = 100000 {total value}
4. Dividing by 500.
5. Therefore, x + 2y = 200.......(ii)
6. Subtracting equation (i) from (ii)
7. Therefore, y = 25.
8. Substituting value of y in equation (i)
9. x + 25 = 175
10. Therefore, x = 150.
11. Number of rs 500 note= 150 and number of rs 1000 note = 25.

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