The thickness of each comic book is 35mm and each book stand is 5cm wide. A shelf holds 40 books and two book stands. How long(measured in m) is the shelf ?

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• A 1.6 m
• B 1.5 m
• C 1.8 m
• D 1.9 m

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Answer: B. 1.5 m

35 mm x 40 = 1400 mm = 1.4 m
5 x 2 = 10 cm =0.1 m
1.4 +0.1 = 1.5
So the bookshelf is 1.5 m long

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