Answer:
The mail carrier can carry 40 letters.
Step-by-step explanation:
The first step is to put ounces into pounds.
1 lb = 16 oz This is the unit rate
0.75 lbs = 12 oz
Now put the 30 lbs into ounces
30 lbs = 480 oz
Divide 480 oz by 12 oz to find how many letters equal 480 oz.
480/12 = 40 letters
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