Question

1) Meena went to a bank to withdraw Rs 2000 . She asked the cashier to give her Rs 50 and Rs 100 notes only. Meena got 25 notes in all. Find how many notes of Rs 50 and Rs 100 she received. ​

Answer 1

Answer:

Step-by-step explanation:

Let the number of Rs 50 notes and Rs 100 notes be x and y respectively.

According to the question, x + y = 25

(i) 50x + 100y = 2000

(ii) Multiplying equation (i) by 50, we get 50x + 50y = 1250

(iii) Subtracting equation (iii) from equation (ii), we get 50y = 750 y = 15

Putting this value in equation (i), we have x = 10 Hence, Meena has 10 notes of Rs 50 and 15 notes of Rs 100.

Answer 2

Answer:

Let the number of rupees 50 and 100 notes = x + y

So, according to question

x + y = 25. ( 1 )

50 x + 100 y = 2000. ( 2 )

by elimination method we have

50 * x + y = 25

Subtracting equation 1 from 2

50x + 100y = 2000

50x + 50y = 1250

50y = 750

y = 15

x + y = 25 ( given)

x = 25-15

= 10

therefore there are 10 fifty rupee notes and 15 hundred rupee notes