document.write( "Question 345325: if you go 126 km/h for 30 minutes then go 100 km/h for 45 minutes what is your average speed \n" ); document.write( "

Algebra.Com's Answer #246939 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Rate*Time=Distance
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\n" ); document.write( " $\"R%2At=D\"$
\n" ); document.write( "Convert all times to hours.
\n" ); document.write( "30 minutes=1/2 hr
\n" ); document.write( "45 minutes=3/4 hr
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\n" ); document.write( " $\"D%5B1%5D=126%281%2F2%29=63\"$ km
\n" ); document.write( " $\"D%5B2%5D=100%283%2F4%29=75\"$ km
\n" ); document.write( " $\"D=D%5B1%5D%2BD%5B2%5D\"$
\n" ); document.write( " $\"D=63%2B75\"$
\n" ); document.write( " $\"highlight%28D=138%29\"$ km
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\n" ); document.write( " $\"t=t%5B1%5D%2Bt%5B2%5D\"$
\n" ); document.write( " $\"t=2%2F4%2B3%2F4\"$
\n" ); document.write( " $\"highlight%28t=5%2F4%29\"$ hr
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\n" ); document.write( " $\"V%5Bave%5D=D%2Ft=138%2F%285%2F4%29\"$
\n" ); document.write( " $\"highlight_green%28V%5Bave%5D=110.4%29\"$ kph \n" ); document.write( "

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