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A student reads 2/5 of a book in 45 minutes. How much of the book will be read if the student reads at the same speed for 70 minutes?
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A student reads 2/5 of a book in 45 minutes. How much of the book will be read if the student reads at the same speed for 70 minutes?

User EuTIMER
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(2/5)x=45, multiply both sides by 5, 2x=225, divide both sides by 2, x=225/2 minutes to read the whole book.
User Spedwards
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