document.write( "Question 793928: You must be at a meeting in a city 630 miles away in 8 hours and 45 minutes, what should be your average speed? \n" ); document.write( "

Algebra.Com's Answer #480497 by jim_thompson5910(35256) $\"\"$ $\"About$

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8 hours, 45 minutes = 8 hr + 45 min\r
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\n" ); document.write( "\n" ); document.write( "8 hours, 45 minutes = 8 hr + 45/60 hr\r
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\n" ); document.write( "\n" ); document.write( "8 hours, 45 minutes = 8 hr + 0.75 hr\r
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\n" ); document.write( "\n" ); document.write( "8 hours, 45 minutes = 8.75 hours\r
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\n" ); document.write( "\n" ); document.write( "d = rt\r
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\n" ); document.write( "\n" ); document.write( "630 = r*8.75\r
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\n" ); document.write( "\n" ); document.write( "630/8.75 = r\r
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\n" ); document.write( "\n" ); document.write( "72 = r\r
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\n" ); document.write( "\n" ); document.write( "r = 72\r
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\n" ); document.write( "\n" ); document.write( "So you need to travel 72 miles per hour\r
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\n" ); document.write( "\n" ); document.write( "Note: this average speed is unrealistic (even on the highway in most places), so ideally you should plan accordingly and stretch out that time limit. \n" ); document.write( "

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