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

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marcdavenport2p427yx marcdavenport2p427yx

23-04-2018
Mathematics

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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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Аноним Аноним · Answer 1 · 2018-04-23T16:14:54+02:00

Convert minutes and seconds to minutes:
[tex]\text{3 mins 45 seconds} \longrightarrow 3 \dfrac{3}{4} \text{mins}[/tex]

FInd 3 3/4 mins:
[tex]\text{1 min} \longrightarrow 28 \text{ copies}[/tex]

[tex]3 \dfrac{3}{4} \text{ min} \longrightarrow 28 \times 3\dfrac{3}{4} \text{ copies}[/tex]

[tex]3 \dfrac{3}{4} \text{ min} \longrightarrow 28 \times \dfrac{15}{4} \text{ copies}[/tex]

[tex]3 \dfrac{3}{4} \text{ min} \longrightarrow 105 \text{ copies}[/tex]

Answer: It can make 105 copies.