Puzzle 197
If …
7/28 of 64 is 16,
and 9/12 of 100 is 75,
and 3/9 of 33 is 11,
what is 5/15 of 45?
Puzzle Copyright © Kevin Stone
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Hint
This puzzle is perhaps easier than it first appears.
Answer
15.
Using normal mathematics!
5/15 of 45 = 1/3 of 45 = 15.
Puzzle 198
If cat and a half can catch a mouse and a half in a day and a half how many mice can 3 cats catch in 3 days?
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Hint
How many mice does one cat catch?
Answer
Six mice.
1.5 cats catch 1.5 mice in 1.5 days.
so
1 cat catches 1 mouse in 1.5 days.
1 cat catches 2 mice in 3 days.
Therefore
3 cats catch 6 mice in 3 days.
Puzzle 199
What day would tomorrow be if …
… yesterday was five days before the day after Sunday's tomorrow?
Puzzle Copyright © Kevin Stone
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Hint
Try working backwards.
Answer
Saturday.
Reasoning
It's best to work backwards:
"Sunday's tomorrow"
is Monday.
"the day after Sunday's tomorrow"
is therefore Tuesday.
"five days before the day after Sunday's tomorrow"
is therefore Thursday.
"yesterday was five days before the day after Sunday's tomorrow"
yesterday was Thursday, making today Friday. Therefore, tomorrow is Saturday.
Puzzle 200
Can you find a five-letter word which …
… when written in upper-case, reads the same when turned upside down?
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Hint
The word begins with the letter S.
