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A copy machine makes 28 copies per minute. How many copies does it make in 3 minutes and 45 seconds?

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Convert minutes and seconds to minutes:

\text{3 mins 45 seconds} \longrightarrow 3 (3)/(4) \text{mins}


FInd 3 3/4 mins:

\text{1 min} \longrightarrow 28 \text{ copies}


3 (3)/(4) \text{ min} \longrightarrow 28 * 3(3)/(4) \text{ copies}


3 (3)/(4) \text{ min} \longrightarrow 28 * (15)/(4) \text{ copies}


3 (3)/(4) \text{ min} \longrightarrow 105 \text{ copies}

Answer: It can make 105 copies.

User Mark Payne
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