A man sold a watch for Rs 75 and got a profit percentage equals to cost price. Find Cost Price of the watch.
Explanation:
Let the cost price be Rs. x
Hence, P% = x%
SP = CP(1 + P/100)
⇒ 75 = x(1 + x/100)
⇒ x = 50
Hence, cost price of the watch is Rs. 50
Hence, option (a).
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