Question 1210393
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Since the problem asks to compare the weekly costs as a ratio in lowest terms, it might be easiest to convert the given decimal costs into fractions.  Note this will be relatively easy, because both given rates involve .25 = 1/4 of a pound.<br>
one day in September: 11.25 = 45/4
one week = 7 days in September: 7*(45/4) = 315/4
one week in August: 88.25 = 353/4<br>
The ratio is 315/353.  Those whole numbers have no common factor, so that ratio is in lowest terms.<br>
ANSWER: 315/353, or 315:353<br>