document.write( "Question 816555: austin and george can wash a car in 35 minutes. austin can wash the same car in 40 minutes without any help. how long would it take george to wash the car on his own? \n" ); document.write( "

Algebra.Com's Answer #491643 by TimothyLamb(4379) $\"\"$ $\"About$

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a + g = 1 car / 35 min
\n" ); document.write( "a = 1 car / 40 min
\n" ); document.write( "---
\n" ); document.write( "a + g = 1/35
\n" ); document.write( "a = 1/40
\n" ); document.write( "---
\n" ); document.write( "a + g = 1/35
\n" ); document.write( "1/40 + g = 1/35
\n" ); document.write( "g = 1/35 - 1/40
\n" ); document.write( "g = 40/1400 - 35/1400
\n" ); document.write( "g = 5/1400
\n" ); document.write( "g = 1/280
\n" ); document.write( "---
\n" ); document.write( "rate = unit/time
\n" ); document.write( "time = unit/rate
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "george needs 280 minutes to wash the car on his own
\n" ); document.write( "---
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