document.write( "Question 214838: Car A is traveling at 20 miles per hour. Car B is one mile behind, following at 30 miles per hour. A fly can move 40 miles per hour. The fly begins on the front bumper of car B and flys back and forth between the two cars. How many miles will the fly travel before it is crushed in the collision?\r
\n" ); document.write( "\n" ); document.write( "Totally confused as to how to set it up. I know\r
\n" ); document.write( "\n" ); document.write( "Car A rate = 20/hr
\n" ); document.write( "Car B rate = 30/hr and distance = d-1
\n" ); document.write( "Fly rate hr
\n" ); document.write( "I assume time is constant
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Algebra.Com's Answer #162303 by Alan3354(69443) $\"\"$ $\"About$

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Car A is traveling at 20 miles per hour. Car B is one mile behind, following at 30 miles per hour. A fly can move 40 miles per hour. The fly begins on the front bumper of car B and flys back and forth between the two cars. How many miles will the fly travel before it is crushed in the collision?
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\n" ); document.write( "Car B is gaining on car A at 10 mph (30 - 20). To overtake car A 1 mile ahead at 10 mph will take 1/10 hours.
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\n" ); document.write( "The fly will go back and forth at 40 mph for 1/10 of an hour.
\n" ); document.write( "40*(1/10) = 4 miles. \n" ); document.write( "

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