# Meena went to a bank to withdraw Rs.2000. She asked the cashier to give 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.

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by dweejareddy

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by dweejareddy

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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**

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