document.write( "Question 593284: I have a 4th grader trying to solve a math word problem. I need to help her and show her the reasoning behind the answer. Please help!\r
\n" ); document.write( "\n" ); document.write( "How long can long-legged spiders crawl?
\n" ); document.write( "clue: Dante rides his bike 8 miles per hour, racing the fastest spider. After a half-hour, the spider is 1 mile ahead of him. I already know the answer is 10, but I am trying to teach her the reasoning. \n" ); document.write( "
Algebra.Com's Answer #376264 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Dante rides his bike 8 miles per hour, racing the fastest spider. After a half-hour, the spider is 1 mile ahead of him.
\n" ); document.write( "-----------------------
\n" ); document.write( "In 1/2 hr, Dante went 4 miles (8 mi/hr * 0.5 hr)
\n" ); document.write( "The spider is 1 mile ahead --> 5 miles in 0.5 hr
\n" ); document.write( "-----
\n" ); document.write( "d = r*t
\n" ); document.write( "r = d/t = 5/0.5
\n" ); document.write( "r = 10 mi/hr
\n" ); document.write( "-------------
\n" ); document.write( "In absolute terms, the fastest spider is the camel spider that lives in hot, desert regions. This eight-legged speedster can run across sand at an impressive 10-12 mph.
\n" ); document.write( "================
\n" ); document.write( "I think that's the answer you wanted, since you said it was 10. But, you asked \"how long can it crawl?\"
\n" ); document.write( "------------
\n" ); document.write( "PS All spiders have eight legs.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );