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2015-11-22T18:54:20+05:30

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Let no. of five rupee notes = x
      no. of ten rupee notes = x+10

Cost of 5 rupee notes = Rs. 5x
Cost of 10 rupee notes = Rs. 10x +100
Total Cost = Rs. 1000

Therefore,

5x + 10x + 100 = 1000
15x = 1000 - 100
15x = 900
x = 900/15 = 60

Therefore, No. of five rupee  notes = 60
No. of ten rupee notes = 60 + 10 = 70
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