Question
The combined cost price of two watches, 'P' and 'Q',
amounts to Rs. 1,250. Watch 'P' is sold for a 20% profit, while watch 'Q' achieves an 18% profit. Given that their total selling price reaches Rs. 1,490, calculate the disparity in their initial cost prices.Solution
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
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