document.write( "Question 813046: One type of motor requires a mixture of oil and gasoline in a ratio of 1 to 15 (that is, 1 part of oil to 15 parts of gasoline). How many liters of each area contained in 20-liter mixture? \n" ); document.write( "

Algebra.Com's Answer #489558 by TimothyLamb(4379) $\"\"$ $\"About$

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a = oil
\n" ); document.write( "g = gas
\n" ); document.write( "---
\n" ); document.write( "1/15 = a/g
\n" ); document.write( "15 = g/a
\n" ); document.write( "15a = g
\n" ); document.write( "g + a = 20
\n" ); document.write( "---
\n" ); document.write( "g + a = 20
\n" ); document.write( "15a + a = 20
\n" ); document.write( "16a = 20
\n" ); document.write( "a = 5/4
\n" ); document.write( "---
\n" ); document.write( "a = 1.25 liters
\n" ); document.write( "g = 18.75 liters
\n" ); document.write( "---
\n" ); document.write( "check:
\n" ); document.write( "18.75/1.25 = 15/1
\n" ); document.write( "---
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