Meena went to 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 noted of Rs. 50 and Rs.100 she received
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Answer :
Rs 50 notes = 10 and Rs 100 notes = 15
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Solution :
Let total Rs 50 notes = x
and total Rs 100 notes = y
∴ Total notes = x + y
But we are given total notes = 25
Now, Meena has total money =50x + 100y
But we are given total money =Rs 2000
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On substraction of ① and ②,
(x+y) - (x+2y) = 25 - 40
x + y - x - 2y = - 15
- y = - 15
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Now, by putting y in ①,
x+y=25
x + 15 = 25
x = 25 - 15
∴ Rs 50 notes, x = 10
and Rs 100 notes, y = 15
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