Answer:
Money earned for recycling 28 pounds of copper is $ 56
Explanation:
Cost of a given substance is the amount of money obtained or received for selling a given substance. The total money received for selling a given number of units or a given amount of substance is equal to the total number of units multiplied by the cost of one unit.
Given: The money earned for recycling p pounds of copper = 2p
Let the money earned for recycling 28 pounds of copper be $ x
As, Money earned for recycling p pounds of copper = 2p
So, Money earned for recycling 28 pounds of copper = $ x
⇒ x = 2p × 28 ÷ p = $ 56
Therefore, money earned for recycling 28 pounds of copper is $ 56.