Traditional Culture Encyclopedia - Weather inquiry - (20 14? Reporter Xiao Zhang wants to know the public's views on "the main causes of smog weather" and randomly investigates some citizens in a certain district.
(20 14? Reporter Xiao Zhang wants to know the public's views on "the main causes of smog weather" and randomly investigates some citizens in a certain district.
(1) The total number is: 80÷20%=400,
m=400× 10%=40,
n = 400-80-40- 120-60 = 100,
(2) The percentage of option E in the pie chart is 60400×100% =15%;
(3)40× 120400= 12 (ten thousand)
A: It is estimated that there are 6.5438+0.2 million citizens with the D option.
So the answer is: (1) 40,100; (2) 15%; (3) 6.5438+0.2 million people.
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