The speed of boat in clan water is 30km/h. A boat takes the same time to travel 10km upstream as it does to travel 15km downstream. Find the speed of river current. Pls answer..

The speed of boat in clan water is 30km/h. A boat takes the same time

1.	The speed of boat in clan water is 30km/h. A boat takes the same time to travel 10km upstream as it does to travel 15km downstream. Find the speed of river current. Pls answer..
Answer» <html><body><p> </p><p></p><p> ANSWER</p><p>Let the <a href="https://interviewquestions.tuteehub.com/tag/speed-1221896" style="font-weight:bold;" target="_blank" title="Click to know more about SPEED">SPEED</a> of the <a href="https://interviewquestions.tuteehub.com/tag/stream-11292" style="font-weight:bold;" target="_blank" title="Click to know more about STREAM">STREAM</a> be x km/hr </p><p>Then Speed of boat downstream =(15+x) km/hr</p><p>Speed of boat upstream =(15−x) km/hr</p><p>Therefore, </p><p>15+x</p><p>30</p><p> </p><p> + </p><p>15−x</p><p>30</p><p> </p><p> =4 </p><p>2</p><p>1</p><p> </p><p> = </p><p>2</p><p>9</p><p> </p><p> </p><p>⇒ </p><p>(15+x)(15−x)</p><p>30(15−x)+30(15+x)</p><p> </p><p> = </p><p>2</p><p>9</p><p> </p><p> </p><p>⇒ </p><p>225−x </p><p>2</p><p> </p><p><a href="https://interviewquestions.tuteehub.com/tag/900-341675" style="font-weight:bold;" target="_blank" title="Click to know more about 900">900</a></p><p> </p><p> = </p><p>2</p><p>9</p><p> </p><p> </p><p>⇒200=225−x </p><p>2</p><p> </p><p>⇒x </p><p>2</p><p> =25</p><p>⇒x=5 km/hr</p><p></p></body></html>