The earth rotates at an angle of _______ degree in 4 hours 30 minutes

Question

Options are

1;67 1/2

2;60

3;52 1/2

4;37 1/2

Please solve this problem

Answer 1

Option 1) 67.5

Explanation:

As we know that their are 360' and Earth takes 24 hours to rotate. Therefore:

Hours Earth takes to rotate 360' = 24

So, In 1 hour the Earth will rotate = 360'/24

                                                      = 15'

And, In 4.5 hour the Earth will rotate = 15 * 4.5

                                                           = 67.5 or 67 1/5