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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Time is the most beneficial- watch this video to learn why. https://www.youtube.com/watch?v=RRWggYusSds
Answer:
D.
Explanation:
On 7th December 1941, Pearl Harbour, Hawaii was attacked with a surprise by Japanese Navy Air service. The destruction on harbour was massive. With the casualities of 3,500 American lives, the United States declared war on Japan on 8th December 1941 under Presidency of Franklin D. Roosevelt.
Therefore, the correct answer is option D.
The question does not include the map. However, historical records show that the Axis Powers were: Germany, Japan, and Italy.
<h3>When were the Axis Powers formed?</h3>
The coalition between Germany, Japan, and Italy- the Axis Powers was formed on the 27th of September, 1940 after signing a tripartite pact in Berlin.
The agreement or pact provided that they would support one another if any of them were attached by any nation who were not currently part of the World War II.
See the link below for more about Axis Powers:
brainly.com/question/883132
Answer:
D. falling crop prices
Explanation:
The biggest factor that led to the Great Depression was the big drop in the crop prices. The reason why this happened was the bad planning of the agricultural sector and farmers. They managed to produce much more crops then what the domestic market demanded, but also more then what was demanded for export. This led to enormous surplus of crops, so the prices started to drop incredibly low. This created a chain reaction, so the whole economy started to crumble because of it, and in accordance to it, the national currency as well, leading to big inflation.
