Puzzle 293
Can you find the country hidden in the following paragraph:
We told Cliff to run, 'Run Cliff, run'. So Cliff ran, celebrating his recent victory in the interdepartmental relay race.
Puzzle Copyright © Kevin Stone
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Hint
The country spans more than one word.
Answer
France.
We told Cliff to run, 'Run Cliff, run'. So ClifF RAN, CElebrating his recent victory in the interdepartmental relay race.
Puzzle 294
During a recent BrainBashers race meeting, the fastest driver managed to complete a lap with an average speed of 150 mph.
They managed to complete the first two fifths of the lap at a speed of 123 mph and the second two fifths of the lap at a speed of 164 mph.
At what speed was the final one fifth of the lap length covered?
The answer is not 176 mph.
Puzzle Copyright © Kevin Stone
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Hint
Adding the speeds won't work.
Answer
205 mph.
Reasoning
If we take the number of miles in a lap to be L miles and use Time = Distance ÷ Speed.
The first 2/5 are covered at 123 mph. Therefore, the time taken was [(2/5) x L] ÷ 123 hours.
The next 2/5 are covered at 164 mph. Therefore, the time taken was [(2/5) x L] ÷ 164 hours.
The last 1/5 is covered at y mph. Therefore, the time taken was [(1/5) x L] ÷ y hours.
The entire trip is covered at an average of 150 mph, and we can conclude that:
2L 2L L L
————— + ————— + ——— = ———
5x123 5x164 5y 150
Rearranging and simplifying gives:
1 1 2 2
——— = —— - ——— - ———
y 30 123 164
That means that y = 1 ÷ (1/30 − 2/123 − 2/164)
Using a calculator gives y = 205.
Puzzle 295
What number is …
… three-quarters of eight-ninths of one-half of 2001?
Puzzle Copyright © Kevin Stone
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Hint
Can the fractions be simplified?
Answer
667.
Reasoning
3 8 1
— of — of — of 2001
4 9 2
which simplifies to:
24
—— of 2001
72
which simplifies to:
1
— of 2001
3
Giving 667.
Puzzle 296
If York is 9 miles away, London is 14 miles and Manchester is 23 miles away.
How far away is Leeds?
Puzzle Copyright © Kevin Stone
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Hint
Consonants and vowels (AEIOU) are each worth something.
Answer
12 miles away.
Consonants are worth 2 and vowels (AEIOU) are worth 3.
Double-Checking
York
3C + 1V = 3 x 2 + 3 = 9
London
4C + 2V = 4 x 2 + 2 x 3 = 14
Manchester
7C + 3V = 7 x 2 + 3 x 3 = 23
Leeds
3C + 2V = 3 x 2 + 2 x 3 = 12