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Question
Rahim can now 16 km/hr in still water. It takes her thrice as long to row up as to row down the river. Find the difference between her speed (km/hr) in still water and that of the steam.
8
16
24
12
ANSWER : 1
Descrption
<p style="margin-left:0px;">Let, the speed of Stream = x</p><p style="margin-left:0px;">,so, downstream speed = 16+x and upstream speed = 16-x</p><p style="margin-left:0px;">ATQ,</p><p style="margin-left:0px;">16+x = 3(16-x)</p><p style="margin-left:0px;">Or, 16+x = 48 -3x</p><p style="margin-left:0px;">Or, 4x = 32</p><p style="margin-left:0px;">Or, x =8</p><p style="margin-left:0px;">So speed of stream = 8 and difference of speed of still water & stream = 16–8 = 8km/hr</p><p style="margin-left:0px;"> </p><figure class="media"><oembed url="https://www.youtube.com/watch?v=uN_L-3Kjnms"></oembed></figure><p style="margin-left:0px;"> </p><p style="margin-left:0px;"> </p><p style="margin-left:0px;"><br> </p>
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