document.write( "Question 394678: How do I set this up as an equation and explain it to my child?\r
\n" ); document.write( "\n" ); document.write( "You jog at a speed of 6 miles per hour for 20 minutes, and you walk at a speed of 4 miles per hour for t minutes. If your combined jogging and walking distance is 3 miles, for how long did you walk? \n" ); document.write( "

Algebra.Com's Answer #280012 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "D = r*t  (how fast for how long tells us how far)
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document.write( "Total distance is 3 miles.
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document.write( "Note: we need to compare apples to apples when using the distance formula  
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document.write( "If speed is in mph, then time must be expressed in hours. 20min = 20/60 = 1/3 hr
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document.write( "Questions states***
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document.write( "    jogging  + walking
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document.write( " 6mph*(1/3)hr + 4mph*t = 3miles
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document.write( "solving for x
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document.write( " 2 mi + 4mph*t = 3mi
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document.write( "        4mph*t = 1mi
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document.write( "         t = (1/4)hr, time spent walking \n" );
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