It took jayla 40 seconds to rip half a DVD. what is jaylas ripping rate in DVDs per minute?

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asked Sep 9, 2016 155k views

1 vote

It took jayla 40 seconds to rip half a DVD. what is jaylas ripping rate in DVDs per minute?

Mathematics
middle-school

Kaneda asked

by Kaneda

9.2k points

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1 Answer

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$min-minute;\ s-second\\\\1min=60s\\\\\begin{array}{ccc}40s&-&0.5\ DVD\\60s&-&x\ DVD\end{array}\ \ |cross\ multiply\\\\\\40\cdot x=60\cdot0.5\\40x=30\ \ \ \ |divide\ both\ sides\ by\ 40\\x=(30)/(40)\\\\x=(3)/(4)\ (DVD)\\\\(3)/(4)=0.75\\\\Answer:\boxed{0.75DVD\ per\ 1\ min}$

Rishiag answered Sep 15, 2016

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