BrainBashers - Random Puzzles

Puzzle 13

Three people check into a hotel.

They pay £30 to the manager and go to their room.

The manager suddenly remembers that the room rate is £25 and gives £5 to the porter to return to the people.

On the way to the room the porter reasons that £5 would be difficult to share among three people so they keep £2 and give £1 to each person.

Now each person paid £10 and got back £1.

So they paid £9 each, totalling £27. The porter has £2, totalling £29.

Where is the missing £1?

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Puzzle 14

What gets wetter …

… the more it dries?

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Puzzle 15

I started a journey to my Aunt's yesterday with a full tank of gasoline, 10 gallons, but at that exact moment my gasoline tank sprang a leak.

I managed to drive 50 miles, in exactly one hour, before coming to a complete stop with an empty tank.

I know that the car manages 25 miles per gallon.

How quickly was I losing gasoline?

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Puzzle 16

Farmer Stone is quite an eccentric dairy farmer.

He originally had a total of 54 gallons of milk in three churns, and he wanted to make sure each churn contained 18 gallons of milk.

In order to do this, he did the following:

First, he poured ¹/₄ of the first churn into the second churn.
He then poured ¹/₂ of the second churn into the third churn.
Finally, he poured ¹/₃ of the third churn into the first churn.
How many gallons did each churn contain before Farmer Stone started pouring?

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