Earth Movers & Shakers operates 3 iron ore mines. The table below shows each mine's total daily production and the current number of miners at each mine. All miners work for the same wage, and each miner in any given mine produces the same number of tons per day as every other miner in that mine. Suppose Earth Movers & Shakers needs to fill an order for 100 tons of ore in a single day. If it has no other orders to fill that day, and it's not possible to transfer miners from one mine to another, it should:

Question

Earth Movers & Shakers operates 3 iron ore mines. The table below shows each mine's total daily production and the current number of miners at each mine. All miners work for the same wage, and each miner in any given mine produces the same number of tons per day as every other miner in that mine.  Suppose Earth Movers & Shakers needs to fill an order for 100 tons of ore in a single day. If it has no other orders to fill that day, and it's not possible to transfer miners from one mine to another, it should:

Quizplus · Accepted Answer

At Mother Lode, each miner produces 4 tons per day; at Scraping Bottom, each miner produces 3 tons per day; and at Middle Drift, each miner produces 5 tons per day. Since all miners are paid the same wage, the cost of producing each ton will be the lowest if you take ore from the mine (or mines) where each miner produces the most tons per day. So, you would take 75 tons from Middle Drift, and then take 25 tons from Mother Lode.

Earth Movers & Shakers Operates 3 Iron Ore Mines