# I have Rs 1000 in ten and five rupee notes. If the number of ten rupee notes that I have is ten more than the number of five rupee notes. How many notes do I have in each denomination?

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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

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