math
posted by brianne .
a case of diet cola costs $7.23. If there are 24 cans in a case, find the cost per can. Round to the nearest cent. then find the number of cans you can buy per $1. Round to the nearest ten. Which number is more useful? why?

7.23 / 24 = 0.30 per can
1/0.3 = 3 cans per dollar
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