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      Question

      Amit and Sumit started a business by investing Rs.

      β€˜X’ and Rs. (X + 400), respectively. 16 months later, Sumit withdrew his entire investment. At the end of 20 months, the total profit from the business was Rs. 5,600, out of which profit share of Sumit was Rs. 1,600 more than that of Amit. Find the value of β€˜X’.
      A 240 Correct Answer Incorrect Answer
      B 320 Correct Answer Incorrect Answer
      C 450 Correct Answer Incorrect Answer
      D 560 Correct Answer Incorrect Answer
      E 600 Correct Answer Incorrect Answer

      Solution

      Number of months for which Amit invested in the business = 16 + 4 = 20 months Let the profit share of Amit out of the total profit of Rs. 5600 = Rs. β€˜Y’ Then, profit share of Sumit out of the total profit of Rs. 5600 = Rs. (Y + 1600) So, Y + Y + 1600 = 5600 Or, Y = (5600 βˆ’ 1600) Γ· 2 = 2000 So, profit shares of Amit and Sumit are Rs. 2,000 and Rs. 3,600, respectively. So, respective ratio of profit shares of Amit and Sumit = (X Γ— 20) : {(X + 400) Γ— 16} = 20X : (16X + 6400) = 2000 : 3600 = 5 : 9 So, 20X Γ— 9 = (16X + 6400) Γ— 5 Or, 180X = 80X + 32000 Or, X = 32000 Γ· 100 = 320 Hence, X = 320

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