meena went to a bank to withdraw Rs200p.She asked the give her Rs50 and Rs100 notes only. Meena got 25 notes in all.Find how many notes of Rs50 and Rs100 she received
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Answer:
No. of Rs. 50 notes = 10
No. of Rs. 100 notes = 15
Step-by-step explanation:
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
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