You have the misfortune to own an unreliable clock. This one loses exactly 10 minutes every hour. It is now showing 5:00am and you know that is was correct at midnight, when you set it. The clock stopped 8 hours ago, what is the correct time now?

Hint: Determine how many clock minutes pass for each real hour.

Answer: 2:00pm.

The clock is losing 10 minutes every hour, so for every real hour that has passed, the clock will only show 50 minutes.

The clock now shows 5:00am, so we know that 300 clock minutes have passed. As every 50 clock minutes is actually a real hour: 300 ÷ 50 = 6 hours. So the clock stopped at 6:00am.

As the clock stopped 8 hours ago, the time now must be 2.00pm. QED.

Puzzle 402

Punctuate these words:

that that is is that that is not is not is not that it it is

[Ref: ZTOT]

Hint: Try saying it out loud.

Answer:
That that is, is: that that is not, is not. Is not that it? It is.

Puzzle 403

What is represented by this BrainBat?

lookbebebebeuleap

[Ref: ZKZW] Copyrighted.

Hint: Say what you see.

Answer: Look before you leap.

Puzzle 404

Place letters into the grid such that every row, column, and 2x2 block has letters (in any order) that form a common word.

Each letter is only used once, and no letter is repeated in the rows/cols/blocks.

Across: SOCK, DULY, BARK, TIES
Down : TALK, YOKE, CUBS, RIDS
Boxes : YOLK, CUDS, TAKE, RIBS
Note : Other anagrams of these words are OK as long as they don't change the answer grid.

Puzzle 405

Using the BrainTracker grid below, how many words can you find? Each word must contain the central R and no letter can be used twice, however, the letters do not have to be connected. Proper nouns are not allowed, however, plurals are. Can you find the nine letter word?