BrainBashers - Random Puzzles

Puzzle 109

A large freshwater 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.

6 small pipes, on their own, can drain the reservoir in 18 hours.

How long will 6 large pipes and 6 small pipes take to drain the reservoir?

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Puzzle 110

What is the next number in this sequence:

1 2 3 4 ?

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Puzzle 111

I was quite bored yesterday, so I visited my local animal sanctuary.

To pass the time, I counted 612 legs.

This came from an equal number of beetles, spiders, and mice.

Can you work out the total number of animals I counted?

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Puzzle 112

These words have had their vowels (AEIOU) removed, can you replace them to find some animals:
pnd frrt s ln hdghg chth tdpl ttr plr br lprd grff

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