Question

What part of an hour elapses from 3:12 P.M. to 4:30 P.M.?

Answer 1

Answer:
`(13)/(10)` of an hour.

Explanation:

1. You know that it is from 3:12 p.m. (48 minutes before 4:00 p.m.) to 4:30 p.m. (30 minutes after 4:00 p.m.)

2. Therefore, you must make the following addition:

`48minutes+30minutes=78minutes`

This is 78 minutes out of 1 hour (60 minutes).

3. Therefore, you have the following fraction:

`(78)/(60)`

4. Now, you must reduce the fraction:

`(78)/(60)=(13)/(10)`

5. The answer is 13/10 on an hour.