5% more is gained by selling a watch for Rs. 350 than by

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5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is

Let C.P. of watch = Rs. y
Difference between selling prices = Rs. (350 – 340) = Rs. 10
According to the question,
5% of y = 10

⇒	5y	= 10
	100

⇒ 5y = 1000

⇒ y =	1000	= Rs. 200
	5

Hence , C.P. of watch is Rs. 200 .