Mr. Rao withdrew Rs. 25000 from an ATM. If he received 150 notes in denominations of Rs. 500 and Rs. 100, find the number of notes of each denomination.
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Answer: Let the number of Rs 5 notes be x Hence the number of Rs 10 notes be (90 − x) Total sum of money = Rs 500 ∴ 5x + 10 (90 − x) = 500 5x + 900 − 10x = 500 − 5x = 500 − 900 = −400 ∴ x = 80 Hence there are 80 notes of Rs 5 and 10 notes of Rs 10.
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