document.write( "Question 1117887: In a year a man smokes about 2.5kg of tobacco at 75p for 50g and 6000 cigarettes costing 31p for 20. What is his average weekly expenditure on smoking? \n" ); document.write( "
Algebra.Com's Answer #733042 by Boreal(15235)\"\" \"About 
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In a year, the cost of tobacco is 50/75=2500/x
\n" ); document.write( "50x=2500*75
\n" ); document.write( "x=50*75=3750p
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\n" ); document.write( "6000/20=x/31
\n" ); document.write( "x=300*31=9300p
\n" ); document.write( "Total is 13,050p
\n" ); document.write( "52 weeks in a year
\n" ); document.write( "divide 13050/52=250.96 or 251 p per week.
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\n" ); document.write( "Check
\n" ); document.write( "in a week, just over 48 gm of tobacco or nearly 75 p
\n" ); document.write( "in a week, just over 115 cigarettes or nearly 186 p
\n" ); document.write( "that adds to 261 p, above the answer consistent with the two parts being slight overestimates.
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