How many hours did she actually sleep?

At first glance, this question looks simple, but it is designed to confuse.

The sentence says:
“Elira slept from 11 PM to 1 PM.”

Most people calculate it like this:

  • From 11 PM to midnight = 1 hour
  • From midnight to 1 PM = 13 hours
    Total = 14 hours

That is the correct way to think about it.

The confusion happens because the question does not explicitly say “the next day,” but in normal everyday language, when someone says “from 11 PM to 1 PM,” it is understood that the time continues into the next day.

So the correct breakdown is:

  • 11 PM to 12 AM = 1 hour
  • 12 AM to 1 PM = 13 hours
    Total = 14 hours

Correct answer: B) 14 hours

Why people get it wrong:

Some people think:

  • 11 PM to 1 PM is only 2 hours (confusing it with 1 AM)
  • Others hesitate because both times say “PM”
  • Some assume it is a trick and overthink it

Simple rule:
When time passes midnight, split it into two parts:

  1. From the starting time to 12 AM
  2. From 12 AM to the ending time

Then add the hours together.