A sold a watch at a gain of 5% to B and B sold it to C at

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A sold a watch at a gain of 5% to B and B sold it to C at a gain of 4%. If C paid Rs. 91 for it, the price paid by A is :

Suppose C.P. of watch for A = Rs. y
According to the question,

y ×		105	×	104	= 91
		100		100

⇒ y =	91 × 100 × 100
	105 × 104

⇒ y =	250	= Rs. 83.33
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