Puzzle 197
Below you can find a proverb.
The letters have been converted to their location in the alphabet.
For example: CAT = 3 + 1 + 20 = 3 1 2 0
1 2 1 2 1 7 8 2 0 5 1 8 9 1 9 2 0 8 5 2 5 1 9 2 0 1 3 5 4 9 3 9 1 4 5
Puzzle Copyright © Kevin Stone
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Hint
The first letter is 12 = L.
Answer
Laughter is the best medicine.
Reasoning
Laughter = 12 + 1 + 21 + 7 + 8 + 20 + 5 + 18
is = 9 + 19
the = 20 + 8 + 5
best = 2 + 5 + 19 + 20
medicine = 13 + 5 + 4 + 9 + 3 + 9 + 14 + 5.
Puzzle 198
Dave's current age is the age of his favourite book (which is 14 years old) plus one third of his age.
How old will he be when his favourite book is twice its current age?
Puzzle Copyright © Kevin Stone
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Hint
A little algebra might help.
Answer
He will be 35 in 14 years.
Reasoning
He is currently 21.
If X is his current age, then:
X = 14 + X
———
3
so
2X = 14
———
3
and
2X = 42
So
X = 21
He is currently 21 and his favourite book is currently 14 years old, when it is 28 years old (double its age) he will be 35.
Puzzle 199
Only using the letters A I O S T, what is the longest word you can find?
You may use each letter more than once.
Puzzle Copyright © Kevin Stone
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Hint
The word begins with the letter T.
Answer
Tattooists.
Which has 10 letters.
Puzzle 200
Using a tap, a nine gallon container and a four gallon container …
… can you measure exactly 6 gallons?
Puzzle Copyright © Kevin Stone
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Hint
Start by filling the 9 gallon container, and then use that to fill the 4 gallon container.
Answer
Here are the contents of the containers after each stage:
A B
9 0 fill A
5 4 fill B from A
5 0 empty B
1 4 fill B from A
1 0 empty B
0 1 fill B from A
9 1 fill A
6 4 fill B from A
6 0 empty B
This leaves 6 gallons in container A.
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