document.write( "Question 114485: ‘n’ litres of oil was poured into a tank and it was still e% empty. How much oil must be poured into the tank in order to fill it to the brim.
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Algebra.Com's Answer #83302 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! ‘n’ litres of oil was poured into a tank and it was still e% empty. How much oil must be poured into the tank in order to fill it to the brim. \n" ); document.write( "------------------------------------ \n" ); document.write( "The n litres occupies (100-e)% of the tank. \n" ); document.write( "-------------------------- \n" ); document.write( "Proportion: \n" ); document.write( "Let x litres be the capacity of the tank \n" ); document.write( "n/(100-e)% = x/100% \n" ); document.write( "-------- \n" ); document.write( "x = n/(100-e)% \n" ); document.write( "------------ \n" ); document.write( "The tank already has n litres in it. \n" ); document.write( "You need [n/(100-e)%]-n = [100n/(100-e)]-n \n" ); document.write( "= [100n-n(100-e)]/(100-e) \n" ); document.write( "= ne/(100-e) litres to fill the tank \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================ \n" ); document.write( " \n" ); document.write( " |