a sum of rupees 500 is in the form of donations of rupees 5 and rupees 10.lf the total number of notes is 90 find the number of notes of each denomination
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letno. of rupee 5be x and so of 10 be y
Answer:
5x+10y=500.e;x+2y=100______i
x+y=90
y=10
and x=80
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