# Medium Puzzles

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## Puzzle 5

My first is in bridge, but not in ridge.

My second is in awake, and in mistake.

My third is in danger, but not in ranger.

My fourth is in strange, and in orange.

My fifth is in spline, and in nine.

My last is in river, and in diver.

My whole likes the darkness.

What am I?

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## Puzzle 6

A kind old person decided to give 12 sweets to each of the adults in the town, and 8 sweets to each of the children.

Of the 612 people in the town, exactly half of the adults, and exactly three quarters of the children took the sweets.

How many sweets did the kind old person have to buy?

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## Puzzle 7

Can you place a different 4-letter word into each of the brackets to create two longer words.
drift[----]wind    home[----]bench    foot[----]mother   court[----]stick    moth[----]room quarter[----]ground   space[----]yard    wild[----]span    your[----]less    back[----]fighter
In the following example, the word 'book' creates the words 'cookbook' and 'bookcase'.
cook[book]case

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## Puzzle 8

A large fresh water reservoir has two types of drainage system: small pipes and large pipes.

6 large pipes, on their own, can drain the reservoir in 12 hours.

3 large pipes and 9 small pipes, at the same time, can drain the reservoir in 8 hours.

How long will 5 small pipes, on their own, take to drain the reservoir?