Explanation:
20 men can do 1 W in 36 days
=> 20 men can do 1/36 W in 1 day
=> 10 men can do 1/72 W in 1 day.
30 girls can do 1W in 36 days
=> 30 girls can do 1/36 W in 1 day
=> 12 girls can do 1/90 W in 1 day.
Together 10 men and 12 girls can do 1/72 + 1/90 W in 1 day
= 9/360 = 1/40 W in 1 day.
Therefore they need 40 days to do the piece of work.
A good economic strategy for an area with tropical weather but few skilled workers would be an economic strategy with a focus on developing education and a technology sector, because this will help the employment of the workers, while give the time to prepare the next workforce into new market that could expand the economy even more.
The population decreased because of diseases brought in by the white settlers that the Native Americans were not used to
Answer:
The Republican-controlled legislature of Michigan adjusts its political districts to keep Republicans in office.
Explanation:
Gerrymandering is adjusting districts to make it more likely for a party to win, which is what is happening here.