[CV064] Odd Equations

064 - Odd Equations

Odd Equations is a puzzle in Professor Layton and the Curious Village.

Puzzle

Oh, my! It looks like someone has been writing nonsense on the blackboard again. It turns out, though, that under certain conditions, these strange equations are actually correct.

Eight minus six equals two. Eight plus six also equals two.

Assuming the above to be true, what does seven plus six equal?

Hints

Click a Tab to reveal the Hint.

At first, it might look like whoever wrote this on the board was just terrible at math, but the truth is that just about everyone does calculations like these.
Heck, you probably do it just about every day.

Eight minus six does, of course, equal two.
But under what conditions does adding six to eight equal two? Here's a hint: when you do math like this, you probably use a commonplace item that many people have on hand.

In this particular type of calculation, no two numbers will ever add up to equal a number higher than 12. This is the most common method, and the one you probably use daily.
However, some people use a different method of calculation where two numbers can add up to reach totals as high as 24.

Solution

Incorrect

Too bad!

As a side note, you probably do math like this on at least a daily basis.

Correct

You are correct!

US Version

This puzzle is using time as a framework for the calculations. If you take six hours away from eight a.m., the time becomes two a.m. Move forward six hours from eight a.m. and the time becomes two p.m. Therefore, if you add six hours to seven a.m., you should arrive at the answer, 1 p.m.

You can, of course, reverse a.m. and p.m. and still find the solution.

UK Version

This puzzle is using time as a framework for the calculations. If you take six hours away from 8 am, the time becomes 2 am. Move ahead six hours from 8 am and the time becomes 2pm. Therefore, if you add six hours to 7am, you should arrive at the answer, 1 pm.

You can, of course, start at 8pm and still find the solution.

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