Puzzle 201
I travelled from London to Glasgow last week at 60 miles per hour, I had filled my petrol tank just before I left, so it was full with 25 gallons.
Unfortunately, my petrol tank sprang a leak immediately, and I only managed to drive 300 miles before I ran out of petrol.
My car does 30 miles per gallon, how fast was I losing petrol through the hole?
Puzzle Copyright © Kevin Stone
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Hint
How much petrol was used for the journey itself?
Answer
3 gallons each hour.
Reasoning
I drove 300 miles at 30 miles per gallon, so I used 10 gallons. Which means I lost the other 15 gallons.
I drove the 300 miles at 60mph, which took me 5 hours.
So I lost 15 gallons of petrol in 5 hours = 3 gallons per hour.
Puzzle 202
In my money box, I found $36.80 made up of equal numbers of quarters, dimes, and nickels.
How many of each coin did I find?
Puzzle Copyright © Kevin Stone
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Hint
Remember that a quarter is 25c, a dime is 10c and a nickel is 5c.
Answer
92 of each coin.
Reasoning
There are an equal number of quarters, dimes and nickels, so we know that the answer must be a multiple of:
25c + 10c + 5c = 40c
and:
3680c ÷ 40c = 92 coins.
Puzzle 203
How many words can you find …
… that contain two consecutive U's?
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Hint
Some are much more common than others.
Answers
Common: vacuum, vacuumed, vacuuming, vacuums.
Less common: continuum, continuums, muumuu, muumuus.
Much less common: carduus, carduuses, continuua, duumvir, duumviral, duumvirate, duumvirates, duumviri, duumvirs, individuum, individuums, lituus, lituuses, menstruum, menstruums, mutuum, mutuums, paramenstruum, paramenstruums, residuum, residuums, squush, squushed, squushes, squushier, squushiest, squushing, squushy, triduum, triduums, ultravacuum, ultravacuums, weltanschauung, weltanschauungen, weltanschauungs.
Puzzle 204
The infamous BrainBashers encyclopedia has been suffering from its usual problems again.
Below is a printout of reptiles and amphibians, but they have lost every other letter.
Can you replace the missing letters?
-r-g
-o-t-i-e
-n-k-
-e-t
-i-a-d
-r-c-d-l-
-a-a-a-d-r
-u-t-e
-k-n-
a-l-g-t-r
Puzzle Copyright © Kevin Stone
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Hint
One of the words end in K. Remember that a skunk isn't a reptile, or an amphibian.
Answers
-r-g = frog
-o-t-i-e = tortoise
-n-k- = snake
-e-t = newt
-i-a-d = lizard
-r-c-d-l- = crocodile
-a-a-a-d-r = salamander
-u-t-e = turtle
-k-n- = skink
a-l-g-t-r = alligator
