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Find unit rate in pages per hour

Mathematics
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A student reads 21 3/4 pages in 2/5 of an hour. What is the unit rate of pages per hour

Aug 21st, 2014

21 3/4 pages = (21*4+3)/4 =87/4

87/4 pages in 2/5 hour or in 24 minutes

Rate Per hour = 87/4 *60/24 =87*15/24 =87*5/8 =435/8  =54 3/8 pages per hour

Aug 21st, 2014

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