Earth Movers & Shakers operates 3 iron ore mines. This table shows their daily production rates and the current number of miners at each mine. All of the miners work for the same wage and each miner in any given mine produces the same number of tons as each other miner in that mine. $$\begin{array} { | l | l | l | }
\hline \text { Mine } & \text { Tons } & \begin{array} { l }
\text { Number of } \
\text { Miners }
\end{array} \
\hline \text { Mother Lode } & 100 & 25 \
\hline \text { Scraping Bottom } & 30 & 10 \
\hline \text { Middle Drift } & 75 & 15 \
\hline
\end{array}$$ Refer to the table above. Earth Movers & Shakers needs to fill an order for 100 tons of ore in a single day, and has no other orders to fill that day. It should:
A) take it all from Mother Lode.
B) take 75 tons from Middle Drift and 25 tons from Mother Lode.
C) take 75 tons from Middle Drift and 25 tons from Scraping Bottom.
D) take 30 tons from Scraping Bottom and 70 tons from Mother Lode.

Question

Earth Movers & Shakers operates 3 iron ore mines. This table shows their daily production rates and the current number of miners at each mine. All of the miners work for the same wage and each miner in any given mine produces the same number of tons as each other miner in that mine. $$\begin{array} { | l | l | l | } 
\hline \text { Mine } & \text { Tons } & \begin{array} { l } 
\text { Number of } \
\text { Miners }
\end{array} \
\hline \text { Mother Lode } & 100 & 25 \
\hline \text { Scraping Bottom } & 30 & 10 \
\hline \text { Middle Drift } & 75 & 15 \
\hline
\end{array}$$ Refer to the table above. Earth Movers & Shakers needs to fill an order for 100 tons of ore in a single day, and has no other orders to fill that day. It should:
A) take it all from Mother Lode.
B) take 75 tons from Middle Drift and 25 tons from Mother Lode.
C) take 75 tons from Middle Drift and 25 tons from Scraping Bottom.
D) take 30 tons from Scraping Bottom and 70 tons from Mother Lode.

Quizplus · Accepted Answer

Middle Drift and Mother Lode can both produce 100 tons of ore in a single day, but Middle Drift has fewer miners. So it is more efficient to take 75 tons from Middle Drift and 25 tons from Mother Lode.

Earth Movers & Shakers Operates 3 Iron Ore Mines Refer to the Table Above