Question

ramu with drawn ₹2000 from bank in the form of ₹100 and ₹20 notes. cashier gave him 40 notes. find the no.of each kind note​

Answer 1

Answer:

Let no. of Rs. 50 notes = x

    no. of Rs. 100 notes = y

Total notes = 25

⇒ x + y = 25

⇒ x = 25-y

total amount only in Rs. 50 notes = 50x

total amount only in Rs. 100 notes = 100y

Total amount = 2000

⇒ 50x + 100y = 2000

⇒50(25-y) + 100y = 2000

⇒50×25 - 50y + 100y = 2000

⇒1250 +50 y = 2000

⇒ 50y = 2000-1250 = 750

⇒ y = 750/50 = 15

    x = 25-15 = 10

No. of Rs. 50 notes = 10

No. of Rs. 100 notes = 15

Answer 2

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