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      Question

      Aditi, Bishnu, and Chetna initiated a business with the

      capital invested by Aditi and Bishnu in a ratio of 9:8. Chetna invested Rs. 800 less than Bishnu. After 18 months, Bishnu and Chetna increased their investment by 25% and 100%, and Chetna doubled her investment. This adjustment led to equal profit shares for Bishnu and Chetna at the end of 3 years. Determine the initial amount invested by Aditi.
      A Rs.3,520 Correct Answer Incorrect Answer
      B Rs.3,600 Correct Answer Incorrect Answer
      C Rs.1,600 Correct Answer Incorrect Answer
      D Rs.2,600 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, Let the initial investment made by β€˜Aditi’ and β€˜Bhisnu’ be Rs. β€˜9a’ and Rs. β€˜8a’, respectively. Then, initial investment of β€˜Chetna’ = Rs. (8a – 800) Ratio of profit shares of β€˜B’ and β€˜C’ = (8a Γ— 18 + 8a Γ— 1.25 Γ— 18):{(8a – 800) Γ— 18 + (8a – 800) Γ— 2 Γ— 18} = 324a:(432a – 43200) = 1:1 Or, 108a = 43200 So, a = 43200 Γ· 108 = 400 So, amount invested by β€˜Aditi’, initially = 9 Γ— 400 = Rs. 3,600

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