Book Worm

A Maths Starter of The Day

Book End Transum Encyclopedia

1

 Transum Encyclopedia

2

 Transum Encyclopedia

3

 Transum Encyclopedia

4

 Book End

Four volumes of the Transum Encyclopaedia are on a shelf as shown here. Billy the book worm begins at page one of the first volume and eats his way through to the last page of volume four. Calculate the length of his meal.

Book cross-section

 Front cover 7mm thick
Pages 2.5cm thick altogether
Back cover 7mm thick
 

 

 

 

 

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Answers

The answer is 9.2cm

Did you realise that page 1 of volume one is on the right side of the book, so the worm only chews through the front cover of volume one before starting on volume two?

The meal consists of: The front cover of volume one plus two times the thickness of a complete volume plus the back cover of volume four.

7mm + 2 x 3.9cm + 7mm