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

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• A 1.6 m
• B 1.5 m
• C 1.8 m
• D 1.4 m

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Answer: B. 1.5 m

Books: 35 mm x 40 = 1400 mm = 1.4 m
Book stands: 5 cm x 2 = 10 cm = 0.1 m
Shelf length = 1.4 + 0.1 = 1.5 m

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