Puzzle 709
Eddie The Elephant can eat 110 bananas in 10 minutes, and Hugo The Hippo can eat 56 bananas in 8 minutes.
How long will it take Eddie and Hugo to eat 954 bananas?
Puzzle Copyright © Kevin Stone
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Hint
Work out how many each can eat in one minute.
Answer
53 minutes.
Reasoning
In one minute, Eddie eats 11 bananas (= 110 ÷ 10).
In one minute, Hugo eats 7 bananas (= 56 ÷ 8).
So in total, they eat 18 bananas every minute.
So it will take 954 ÷ 18 = 53 minutes.
Puzzle 710
Which is larger:
square feet in half a square mile
cubic yards in a cubic furlong
Puzzle Copyright © Kevin Stone
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Hint
There are 3 feet in a yard, 1760 yards in a mile, and 8 furlongs in a mile.
Answer
Square feet in half a square mile.
Reasoning
There are 3 feet in a yard, 1760 yards in a mile, and 8 furlongs in a mile.
A mile is 1760 x 3 = 5280 feet in a mile.
A square mile is 5280 x 5280 = 27878400 square feet.
Therefore, half a square mile = 13,939,200 square feet.
A furlong is 1760 ÷ 8 = 220 yards.
Therefore, a cubic furlong is 220 x 220 x 220 = 10,648,000 cubic yards.
