S1=$70/20gal=$3.50 per gallon
s2=$33.50/(50/4)gal=$2.68 per gallon
s3=$48.75/(15+8)gal=$2.12 per gallon
So supplier #3 has the best deal.
hi,,
329.1 is the answer...
if I round off the no. nearest whole no.
then the answer is 329.
They will be there for 40 minutes because 25+15 is 40
