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Question
Nathan can type \(\dfrac{1}{3}^\text{rd}\) of a page in half a minute. How long will he take to type an entire page?
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Solution
\(\text{ Time taken per page (unit rate) }=\dfrac{\text{Time taken}}{\text{No. of pages typed }}\)
\(= \dfrac{1}{2}\div \dfrac{1}{3}\)
\(=\dfrac{1}{2}\times \dfrac{3}{1}\)
\(= \dfrac{1}{2}\times 3 \)
\(=\dfrac{3}{2}\text{ minutes}\)
\(= \dfrac{1}{2}\div \dfrac{1}{3}\)
\(=\dfrac{1}{2}\times \dfrac{3}{1}\)
\(= \dfrac{1}{2}\times 3 \)
\(=\dfrac{3}{2}\text{ minutes}\)
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