What percent of 40 is 80?

a.20%

b.50%

c.150%

d.200%

D.200%

Step-by-step explanation:

80 is twice as 40 and if we say 40 is 100% that would make 80, 200% .

why do wages differ across industries

step-by-step explanation :

micro economists are concerned with economics on an industry or individual firm basis.

macro economists are concerned with national and international level

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google