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A man can robot 8 km per hour and still water is the speed of the current istwent 2 km per hour and he takes 4 hours to row a place and written back how far is a place

Posted by Pravee Na 1 year, 11 months ago

CBSE > Class 12 > Applied Maths

1 answers

Preeti Dabral 1 year, 11 months ago

Speed of the man in still water =8 kmph.
Speed of the river =2 kmph
Downstream =8+2=10 kmph
Upstream =8−2=6 kmph
{tex}\Rightarrow \frac{x}{10}+\frac{x}{6}=\frac{48}{60}{/tex}
⇒8x=24
⇒x=3 km

1Thank You

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CBSE > Class 12 > Applied Maths