Question

A clock shows 8 a.m. Through how many degrees will the hour hand rotate when the clock shows 1 p.m.?

Answer 1

Answer:

30 degrees

Step-by-step explanation:

it doesn't matter that we are answering for 10am or 10pm both answers are same

Answer 2

Answer:

150°

Step-by-step explanation:

As we observe, the movement of hour hand in a clock we notice that,

The hour hand of the clock rotate through 90° while it reaches 3 from 12

[see the attachment]

Therefore, we can also say that the hour hand of the clock rotates through 90° in 3 hrs.

In 3 hours, the hour hand moves through = 90°

In 1 hour, the hour hand may move through = 90/ 3

= $\boxed{30^{\circ} }$

From 8 A.M. to 1 P.M., the time that passes = 5 hrs.

[from 8A.M. → 12A.M. = 4 hrs

from 12A.M.→ 1P.M =1 hrs ]

=> In 1 hr, the hour hand moves through = 30°

=> In 5hrs, the hour hand moves through = 5 × 30°

=$\boxed{\underline{150^{\circ} }}$

Thus, the hour hand moves through 150° from 8 am to 1 pm. (Ans