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Let the cost price of watch 'P' be Rs. 'z'. So, cost price of watch 'Q' = Rs. (1,250 - z) ATQ: 1.2z + 1.18 X (1,250 - z) = 1,490 Or, 1.2z + 1,475 - 1.18z = 1,490 Or, 0.02z = 15 So, 'z' = 750 Cost price of watch 'Q' = 1,250 - 750 = Rs. 500 Therefore, required difference = 750 - 500 = Rs. 250
0.5 is what percentage of 20?
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