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      Question

      The total number of phones to the total number of

      laptops in Stores A and B is in the ratio 120:13. Additionally, the number of laptops in Store A to those in Store B is in the ratio 3:4. Given that the total number of phones across both stores is 600, determine the approximate difference in the number of laptops between Store A and Store B.
      A 9 Correct Answer Incorrect Answer
      B 29 Correct Answer Incorrect Answer
      C 39 Correct Answer Incorrect Answer
      D 44 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ;

      Total phones : total laptops = 120 : 13

      Total phones = 600

      So total laptops = (13/120) Γ— 600 = 65

      Ratio of laptops in Store A : B = 3 : 4

      Difference = 65 Γ— (3βˆ’4)/(3+4) = 9.29 (rounded to 9)

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