document.write( "Question 815024: Car A leaves home at 40 m/h.Four hours later car B leaves from a house that is 700 miles away headed towards car A at 50 m/h.How long will it take before the two cars meet? \n" ); document.write( "
Algebra.Com's Answer #490660 by TimothyLamb(4379)\"\" \"About 
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s = d / t
\n" ); document.write( "d = s * t
\n" ); document.write( "t = d / s
\n" ); document.write( "---
\n" ); document.write( "when b leaves a has already traveled:
\n" ); document.write( "d = 40 * 4 = 160 miles
\n" ); document.write( "so when b leaves, the distance between a and b is:
\n" ); document.write( "700 - 160 = 540 miles
\n" ); document.write( "---
\n" ); document.write( "the closing speed of the two cars is:
\n" ); document.write( "40 + 50 = 90 mph
\n" ); document.write( "---
\n" ); document.write( "when the cars meet they will have covered 540 miles between both cars, at a closing speed of 90 mph, so:
\n" ); document.write( "t = 540 / 90 = 6 hours
\n" ); document.write( "---
\n" ); document.write( "Answer:
\n" ); document.write( "the cars will meet:
\n" ); document.write( "6 hours after b leaves
\n" ); document.write( "10 hours after a leaves (because a left 4 hours earlier than b)
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
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\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "
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