Question

a wheel rotates 12 times in a minutes. How many times does it rotates in 6 seconds.

Answer 1

1 minute=60 seconds
60 seconds =12 minutes
1 second=60/12=5
6 seconds =5*6=30.
Therefore the wheel rotates 30 times in 6 seconds.
Hope it is correct

Answer 2

The number of rotations in 6 seconds is 1.2.

Given,

A wheel rotates 12 times in a minute.

To Find,

How many times does it rotate in 6 seconds?

Solution,

We can solve the question as follows:

It is given that a wheel rotates 12 times in a minute. We have to find the number of times it rotates in 6 seconds.

$Number\: of\: rotations\: in\: a\: minute = 12$

Since a minute contains 60 seconds, the number of rotations in 60 seconds will also be 12.

$Number\: of\: rotations\: in\: 60\: seconds = 12$

The number of rotations in a second will be:

$Number\: of\: rotations\: in\: a\: second = \frac{12}{60} = \frac{1}{5}$

Now, the number of rotations in 6 seconds will be:

$Number\: of\: rotations\: in\: 6\: seconds = Number\: of\: rotations\: in\: a\: second*6$

                                                     $= \frac{1}{5}*6 = \frac{6}{5} =1.2$

Hence, the number of rotations in 6 seconds is 1.2.