Question

a distance of 6 km is covered in 8 minutes if the same distance is to be covered in 4 minutes by how much must the speed be increased ​

Answer 1

Answer:

We need to increase 2 times(i.e. 90 Km/h) of the previous Speed.

Step-by-step explanation:

Given Data:

Distance Covered 6km in 8 minutes

To  Find:

Speed increased to cover same distance in 4 minutes

Solution:

Firstly , we have to convert data into standard units

i.e.  $\frac{8}{60}hours$  and   $\frac{4}{60}hours$

Now , we calculate the two speeds and see the Difference

$Speed1 = \frac{Distance}{Time} \\\\Speed1 = \frac{6 * 60}{8} \\\\Speed1 = 45 km / h$

Similarly, We check for second condition

$Speed2 = \frac{Distance}{Time} \\\\Speed2 = \frac{6 * 60}{4} \\\\Speed2 = 90 km / h$

Now , we check the difference in Speed

Increased Speed = Speed2 - Speed1

Increased Speed = 90km - 45km

                            = 45km

That means we have to increase our speed 2 times .

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