A purse contains Rs 550 in notes of denominations of Rs 10 and Rs 50. If the number of Rs 50 notes is one less than that of Rs10 notes, then find the number of Rs 50 notes
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Total amount in a purse= 550
Let number of notes of 10 =x
The number of notes of 50= x-1
According to the condition,
x×10+(x−1)×50=550
⟹10x+50x−50=550
⟹60x=550+50=600
⟹x=10
50 rupees notes= 10-1= 9
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