A boat covers a distance of $14$ km in $4$ hours along the flow. What is the speed of the boat in still water if the speed of the flow of water is $2$ km/hr ?

2

km/hr

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3

km/hr

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2.5

km/hr

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1.5

km/hr

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Solution

The correct option is B $1.5$ km/hr
Speed of the flow of water $= 2$ km/hr
Speed of the boat downstream $=$ $3 \frac{1}{2}$ km/hr
Let the speed of the boat in still water $= x$ km/hr
Then, $x + 2 =$ $3 \frac{1}{2}$
$\Rightarrow x = 1.5$ km/hr

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A boat covers a distance of 14 km in 4 hours along the flow. What is the speed of the boat in still water if the speed of the flow of water is 2 km/hr ?

The correct option is B 1.5 km/hrSpeed of the flow of water =2 km/hrSpeed of the boat downstream = 312 km/hrLet the speed of the boat in still water =x km/hrThen, x+2= 312 ⇒x=1.5 km/hr

A boat covers a distance of $14$ km in $4$ hours along the flow. What is the speed of the boat in still water if the speed of the flow of water is $2$ km/hr ?

The correct option is B $1.5$ km/hr
Speed of the flow of water $= 2$ km/hr
Speed of the boat downstream $=$ $3 \frac{1}{2}$ km/hr
Let the speed of the boat in still water $= x$ km/hr
Then, $x + 2 =$ $3 \frac{1}{2}$
$\Rightarrow x = 1.5$ km/hr