A number of rupees 500 is in the form of denominations of rupees 10 and rupees 20. If total number of notes are 35, find the number of notes of each denomination
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Let the number of Rs 5 notes be x
Total number of notes = 90
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
-5x = −400
∴ x = 80
Hence there are 80 notes of Rs 5
Number of Rs 10 notes = 90 - 80 = 10
Hence there are 10 notes of Rs 10.
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