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      Question

      A steamer and a motor boat cover the stretch between a seaport and a dock in 7 hours 20 minutes and 10 hours 40 minutes, respectively. What is the ratio of their speeds?

      A 15 : 11 Correct Answer Incorrect Answer
      B 3 : 2 Correct Answer Incorrect Answer
      C 16 : 11 Correct Answer Incorrect Answer
      D 8 : 5 Correct Answer Incorrect Answer

      Solution

      T1/T2 = S2/S1 Now, 7 hours 20 minutes and 10 hours 40 minutes = 22/3 hours and 32/3 hours 22/32 = S2/S1 ⇒ 11/16 = S2/S1 ⇒ S1 : S2 = 16 : 11 ∴ The ratio of their speeds is 16 : 11

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