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)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( "============== \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. \n" ); document.write( "================= \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. \n" ); document.write( " |