Question

If a man rows at 6 km/hr in still water and 4.5 km/hr against the current, then
find the speed at which man rows along the current.​

Answer 1

Let the rate along the current i.e, speed upstream b

Speed downstream abe x km/hr

=4.5km/hr

> ½ (a+b) = 6

⇒ ½ (4.5 +x ) = 6⇒ 4.5 + x = 12

⇒ x = 12 – 4.5 = 7.5

speed along the current = 7.5 km/hr

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Answer 2

Answer:

let the current speed be x

we know,

1/2*(4.5+x) = 6

or; 4.5+x = 12

or; x= 7.5

therefore , the speed at which man rows along the current is 7.5km/hr

Step-by-step explanation:

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