Puzzle 5
Which month comes next in this sequence:
July · June · March · May · ?
Puzzle Copyright © Kevin Stone
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Hint
Look at the first letters.
Answer
November.
This is the next month in alphabetical order:
April, August, December, February, January, July, June, March, May, November, October, September.
Puzzle 6
Which are there more of …
… fathoms in a kilometre …
… or hours in a month?
Puzzle Copyright © Kevin Stone
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Answer
Hours in a month.
Reasoning
A fathom is 6 feet, which is 1.8288 metres.
So there are 1000 ÷ 1.8288 ≈ 546.8 fathoms in a kilometre.
The shortest month has 28 x 24 hours = 672.
So even the shortest month has more hours than there are fathoms in a kilometre.
Puzzle 7
Last night, I was looking at a road sign and could see that Leeds was 13 miles away, Stoke was 13 miles away and Leek was 10 miles away.
Unfortunately, it was too dark to see how far it was to Manchester. Can you help me?
Puzzle Copyright © Kevin Stone
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Hint
Each vowel (AEIOU) counts as 2 miles.
Answer
27 miles.
Vowels (AEIOU) are worth 2 miles and consonants are worth 3 miles.
Puzzle 8
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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Hint
How many reservoirs can each drain in 36 hours?
Answer
7 hours and 12 minutes.
Reasoning
We can use a time that 12 hours and 18 hours both fit in to, in 36 hours:
6 large pipes can drain 3 reservoirs.
6 small pipes can drain 2 reservoirs.
Therefore, together, 6 large and 6 small pipes can drain 5 reservoirs.
36 hours ÷ 5 = 7.2 hours for one reservoir.
7.2 hours = 7 hours and 12 minutes for one reservoir.
