document.write( "Question 237224: Kris spikes his hair using gel. If he uses 4 mL of gel every day for 20 days and 3 mL every day after that, how many days total will it take him to empty a 128 mL tube of gel?
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Algebra.Com's Answer #174480 by Theo(13342)\"\" \"About 
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In 20 days, he will use 4 * 20 = 80mL of gel.\r
\n" ); document.write( "\n" ); document.write( "128 - 80 = 48 mL of gel is left.\r
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\n" ); document.write( "\n" ); document.write( "48 / 3 = 16\r
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\n" ); document.write( "\n" ); document.write( "In 16 days he will use up 48 mL of gel.\r
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\n" ); document.write( "\n" ); document.write( "The total number of days to exhaust the supply of gel would be 20 + 16 = 36\r
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\n" ); document.write( "\n" ); document.write( "gel runs out after 36 days.\r
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\n" ); document.write( "\n" ); document.write( "20*4 + 16*3 = 80 + 48 = 128\r
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