5 pounds = $2.49
1 pound = $2.49 ÷ 5 = $0.50 (nearest hundredth)
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Answer: $0.50/pound
We assume the unit rate of interest is dollars per pound. To find that, we divide the number of dollars by the number of pounds. ("Per" essentially means "divided by.")
$2.49/(5 lb) = (2.49/5) $/lb ≈ $0.50/lb
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pounds per dollar is also a unit rate. That one would be
... (5 lb)/($2.49) ≈ 2.01 lb/dollar
