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      Question

      A delivery truck travels at 60 km/h and needs to finish

      its route in 2.5 hours. The driver takes a 25-minute break after covering half the distance. What speed should be maintained for the second half?
      A 65 km/h Correct Answer Incorrect Answer
      B 70 km/h Correct Answer Incorrect Answer
      C 75 km/h Correct Answer Incorrect Answer
      D None of these Correct Answer Incorrect Answer

      Solution

      Total distance = 60 ├Ч 2.5 = 150 km
      Time for half = (75 ├╖ 60) ├Ч 60 = 75 minutes
      Time left = 150 тАУ 75 тАУ 25 = 50 minutes
      Required speed = (75 ├╖ 50) ├Ч 60 = 90 km/h

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