Question

A race-boat covers a distance of 60 km downstream in one and a half hour. the speed of race boat in still
water is 35 km/hr. Find the speed of the stream.
covers this distance upstream in 2 hours. ​

Answer 1

Hlo mate

= Distance/Speed3/2 = 60/35+

Let The Speed Of Stream Be x km/hr.

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-x

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+x

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+x

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-x

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 120

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x70-2x = 60

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x70-2x = 602x = 10

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x70-2x = 602x = 10x = 5

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x70-2x = 602x = 10x = 5So

Let The Speed Of Stream Be x km/hr.Now Speed Upstream = 35-xSpeed Downstream = 35+xNow Time = Distance/Speed3/2 = 60/35+xAnd2 = 60/35-xCross Multiplying We Get105+3x = 1203x = 15x = 5Check By Solving Other Equation2 = 60/35-x70-2x = 602x = 10x = 5So Speed Of Stream = 5km/hr

Answer 2

Answer:

$\large{\sf{\pink{\underline{\underline{Answer}}}}}$

Speed of the stream is 5 km/hr.

Hence goes (35−x) km in 1 hr.

Therefore for a distance of 60 km

Time = 6035−x hrs. So, speed of the stream is 5 km/hr.