Two cyclists start biking from the starting point of a trial 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking?

A    2 hours

B    4(1/2) hours

C    3/4 hours

D    6 hours

Solution

Correct Answer: Option B

 

১ম জন ৩ ঘণ্টায় যায় = ৬ × ৩ = ১৮

যখন ২য় জন চলা শুরু করে তখন দুজনের দূরত্ব =১৮ মাইল

১ ঘণ্টায় দূরত্ব কমে = ১০-৬ =৪ মাইল

সময় লাগবে = ১৮/৪ =৪(১/২)

 

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