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Puzzle 81 



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?

Puzzle Copyright © Kevin Stone

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Puzzle 82 



Can you find every occurrence of the word LOVE that appears in this grid (horizontally, vertically, or diagonally)?

The hint will reveal the number of times it occurs, but where are they?


Note: this puzzle is not interactive, and the letters cannot be selected.

Puzzle Copyright © Kevin Stone

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Puzzle 83 



My current age is the age of my favourite book (which is 14 years old) plus one third of my age.

How old will I be when my favourite book is twice its current age?

Puzzle Copyright © Kevin Stone

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Puzzle 84 



Starting in the bottom left corner, and moving either up, or right, adding up the numbers along the way, what is the largest sum you can make?

23541, 32434, 51352, 33231, 14244

Puzzle Copyright © Kevin Stone

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