document.write( "Question 1028108: Fred rode his bike up a mountain at 12 km/h and then back down at 48km/h. If he made the round trip in 1hr 20mins how far is it up the hill? \n" ); document.write( "

Algebra.Com's Answer #643293 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Fred rode his bike up a mountain at 12 km/h and then back down at 48km/h. If he made the round trip in 1hr 20mins how far is it up the hill?
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Let distance, one-way be D
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document.write( "Then time up-hill = , and time downhill = 
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document.write( "We then get the following TIME equation: ____
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document.write( "4D + D = 64 ------ Multiplying by LCD, 48 
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document.write( "5D = 64
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document.write( "D, or distance = , or  \n" );
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