Answer:
A Silver Dollar.
Explanation:
Though, I'm pretty sure it's not true, that is the legend...
<span>The so-called Dark Ages were a giant economic Depression which lasted 300 years - and the only way you could survive was out scratching any kind of food out of the soil. But by Medieval times, things were more organized, and people could afford to live in town. There were various jobs - each person no longer had to do everything needed for survival. People could share the things they made and still live.
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Technically, continuous improvement is an operations concept developed in Japan, although of course it quickly spread to other countries and economies since it provides for more efficiency.
Answer:
Not exactly sure what you mean. However, here are some formulas:
S=D/T
D=S*T
T=D/S
D= Distance
S=Speed
T=Time
