The weight of 75 book is 9kg. What is the weight of 40 such book ?
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Answer:
Step-by-step explanation:
75 books = 9kg
1 book = 9 ÷ 75
40 books = 9 × 40 ÷ 75
40 books = 360 ÷ 75
40 books = 4.8kg
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