The rate of dust deposition is

Note that
1 ton = 9.07185 x 10⁵ g = 9.07185 x 10⁸ mg
1 mi = 1609.34 m = 1.60934 x 10³ m
1 day = 24 h
Therefore

Answer:
I would say it is 141
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Answer: They both weighs 54 pounds.
Step-by-step explanation:
If there are two bags of dog food and one of them weighs 39 pounds and the other weighs 15 pounds and to find out how many pounds both bags weigh together add them together.
39 + 15 = 54 pounds