Question

© A boat is upstream can travel 5 km in 30 min. If the speed of the stream is 1.5 km/h, then find the total distance covert by boat when the boat takes 46 hr to treavel from A to B then return to A​

Answer 1

Answer:

The final answer is 449.65

Step-by-step explanation:

Given,

The boat can travel 5km in 30 mins. Also the speed of the stream is 1.5.

We need to find the total distance covered by the boat in 46 Hours.

Speed of Boat = Distance / Time

Speed of Boat = 5Km / 30mins

Speed = 5 / .5

Speed = 10

Speed of Boat Upstream = 10 + 1.5 = 11.5

Distance = Speed  * Time

Total Time = 46hrs

Total Speed Upstream = 8.5

Total Speed Downstream = 11.5

D/8.5 + D/11.5 = 46

( 11.5 * D + 8.5 * D ) / 11.5 * 8.5 = 46

20D = 4496.5

D = 4496.5 / 20

D = 224.825

Total Distance = 224.825 * 2 = 449.65

How to find Speed?

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https://brainly.in/question/3112722

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Answer 2

Answer:

Total distance covered by the boat in 46 Hr will be 520 Km

Step-by-step explanation:

As per the data given in the question,

We have to determine the total distance covered by the boat in 46 Hr.

As per the question,

It is given that,

A boat in upstream can travel 5 km in 30 min.

Here, the boat is travelling 5 Km in 30 min, so, we can conclude that it will cover 10 Km in 60 minutes, or we can conclude that the speed of the boat in Upstream will be 10 Kmph.

It is given that,

The speed of the stream is 1.5 km/h,

As we know,

Let us assume that the speed of the boat = x Kmph

Speed of stream = y = 1.5 Kmph

So, Upstream speed = x -y

Downstream speed = x +y

So, from above,

x+y = 10 -----------------(i)

So, x - 1.5 = 10 => x = 11.5 Kmph

So, downstream speed = x+y = 11.5 + 1.5 = 13 Kmph

As total time = 46 Hr.

So, we can write the equation as: Total time = Upstream time + Downstream time

$\frac{d}{10}+\frac{d}{13}=46\\\\\frac{13d+10d}{130}=46\\\\\frac{23d}{130}=46\\\\d = 130 \times 2 = 260 \:km$

As boat cover d in downstream and d in upstream.

So, total distance = 2d = 520 Km.

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