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john doe operates a crane that can pick up 3.0 tons of excavated earth in an hour. John's wages are $35 per hour. What, then, is the cost of picking up 85kg of excavated earth?
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john doe operates a crane that can pick up 3.0 tons of excavated earth in an hour. John's wages are $35 per hour. What, then, is the cost of picking up 85kg of excavated earth?

User John Mellor
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User Varol Okan
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