assuming efficiency of each man to dig trench, in one day, for one hour is constant,
so one man, working for one hour in one day can dig 1.5 m
so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Unions forced employers to raise wages and improve working conditions or they wouldn't have laborers. Unions used picketing, protesting, and boycotting to get what they wanted. Through unity, unions helped the working man get what he deserved.
A. predictable and generally have a higher interest rate
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because of adulteration which is the cheapening of products through the addition of impure or inferior products. This helped in determining what could or could not be added to food products through regulations that require use of official weights and measures.
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In the context of the history of slavery in the Americas, free people of color (French: gens de couleur libres; Spanish: gente de color libre) were people of mixed African, European, and sometimes Native American descent who were not enslaved. The term arose in the French colonies, including La Louisiane and settlements on Caribbean islands, such as Saint-Domingue (Haiti), St.Lucia, Dominica, Guadeloupe, and Martinique, where a distinct group of free people of color developed. Freed African slaves were included in the term affranchis, but historically they were considered as distinct from the free people of color. In these territories and major cities, particularly New Orleans, and those cities held by the Spanish, a substantial third class of primarily mixed-race, free people developed. These colonial societies classified mixed-race people in a variety of ways, generally related to visible features and to the proportion of African ancestry.[citation needed] Racial classifications were numerous in Latin America.
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