Puzzle 17
After a day picking strawberries, I ended up with a full basket, which is always nice.
I ate 5, and then gave Alex half of the remaining.
I ate another 3, and then gave Billie one third of the remaining.
I ate another 6, and then gave Charlie two thirds of the remaining.
I now had 34 strawberries left. How many did I start with?
Puzzle Copyright © Kevin Stone
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Hint
Try working backwards.
Answer
335 strawberries.
Reasoning
Working backwards …
I ended up with 34 strawberries, so I had 102 before giving Charlie two thirds.
I ate 6 myself, so I had 108 before I ate those.
I had 108 strawberries, so I had 162 before giving Billie one third.
I ate 3 myself, so I had 165 before I ate those.
I had 165 strawberries, so I had 330 before giving Alex one half.
Ate 5 myself, so I had 335 before I ate those.
Therefore, I started with 335 strawberries.
Double-Checking
I started with 335.
I ate 5, leaving 330.
I gave Alex half (165), leaving 165.
I ate 3, leaving 162.
I gave Billie one third (54), leaving 108.
I ate 6, leaving 102.
I gave Charlie two thirds (68), leaving 34.
Puzzle 18
Below you will find 15 well-known six-letter words, with only their endings remaining.
Can you find the words?
---cil
---hid
---nze
---ese
---lug
---som
---uxe
---uum
---arm
---amo
---rby
---ink
---sai
---too
---fen
Puzzle Copyright © Kevin Stone
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Hints
The first letters of the words are: P, O, B, C, U, R, D, V, D, D, N, S, B, T, D.
Answers
---cil = pencil
---hid = orchid
---nze = bronze
---ese = cheese
---lug = unplug
---som = ransom
---uxe = deluxe
---uum = vacuum
---arm = disarm
---amo = dynamo
---rby = nearby
---ink = shrink
---sai = bonsai
---too = tattoo
---fen = deafen
Puzzle 19
Which is larger:
seconds in a week
feet in 100 miles
Puzzle Copyright © Kevin Stone
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Hint
There are three feet in a yard, and 1,760 yards in a mile.
Answer
Seconds in a week.
Reasoning
There are 60 x 60 x 24 x 7 = 604,800 seconds in a week.
There are 3 x 1760 x 100 = 528,000 feet in 100 miles.
Puzzle 20
How many squares are in the drawing below?

Note: this puzzle is not interactive, and the squares cannot be clicked.
Puzzle Copyright © Kevin Stone
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Hint
There are fewer than 20 squares.
Answer
18 squares.
In the solution below, you can see 6 squares in the middle, with another 12 squares around the outside.