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      Question

      The cost price of watermelon juice in flask F is Rs. 55

      per liter, and the cost price of watermelon juice in flask I is Rs. 40. When the watermelon juice in flasks F and I is mixed, the shopkeeper sells 55 liters of this mixture at the cost price of watermelon juice in flask F, making a profit of 18%. If the same mixture is sold at the cost price of watermelon juice in flask I, what is the percentage of loss or profit earned by the shopkeeper? (Give answer in approximate value)
      A 50% loss Correct Answer Incorrect Answer
      B 10% profit Correct Answer Incorrect Answer
      C 20% loss Correct Answer Incorrect Answer
      D 64% loss Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, Quantity of flask I = i Quantity of flask F = 55 - i CP of the mixture = i × 40 + (55 - i) × 55 = 3025 - 15i SP of the mixture = 55 × 55 = 3025 Profit = (3025 - (3025 - 15i))/(3025 - 15i) × 100 = 18 1650i = 35700 - 165i i = 18 CP of the mixture = 3025 - 15 × 18 = 2755 New SP of the mixture = 55 × 40 = 2200 Required loss percentage = (2755 - 2200)/2755 × 100 = 20.15% loss or 20% loss 

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