document.write( "Question 1142129: 3 litre of oil and 30 litre of petrol cost R45 while 7 litre and 15 litre of petrol cost R40.Calculate the price of the oil. \n" ); document.write( "
Algebra.Com's Answer #762809 by josgarithmetic(39618)\"\" \"About 
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L, price of oil
\n" ); document.write( "p, price of petrol\r
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\n" ); document.write( "\n" ); document.write( "\"system%283L%2B30p=45%2C7L%2B15p=40%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"3L%2B30p-14L-30p=45-80\"
\n" ); document.write( "\"-11L=-35\"
\n" ); document.write( "\"highlight%28L=35%2F11%29\"\"R\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%283%262%2F11%29\"\"R\"
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