When the Wright brothers designed their aircraft, they built a wind tunnel to model the aerodynamics of different wing designs.
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Answer:
34 % of the people must already planning to vote for Wanda
Explanation:
Let there are 100 people in the town
It is given that Wanda will convince 25 % of people vote for her
Now let there are x people who are planning to vote Wanda
Then 100-x people are not planning to vote Wanda
She have to convince 0.25 ( 100-x) people to get 50% of the vote and to win
So
x = 34
So 34 % of the people must already planning to vote for Wanda