A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?

গণিত
Time and Distance

প্রশ্নঃ A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point?

  • ক. m/(r + 2s)
  • খ. m/(r + s)
  • গ. (m + r)/s
  • ঘ. mr - s

সঠিক উত্তরঃ

m/(r + 2s)
There are no comments yet.
Authentication required

You must log in to post an answer.

Log in

বিষয়

গণিত

অধ্যায়

Time and Distance