Answer: 64%
Step-by-step explanation:
The band needs $800 for new uniforms and of that, they only raised $512.
Set up a proportion 
and plug everything you know in.
= 
Solve for x by cross multiplying and dividing.
512 × 100 = 51200
51200 ÷ 800 = 64
x = 64
The school band has raised 64% of their goal already.
According to John Locke, <u>Experience</u> is how we acquire basic knowledge.
What explains why, in many of the problems, historical data is used is; Information changes rapidly.
<h3>What is the theory of John Locke?</h3>
1) John Locke's theory simply means that all knowledge comes exclusively through experience. He argues that at birth the mind is a tabula rasa, that humans fill with ideas as they experience the world through the five senses.
Thus, the missing word in the question is "Experience".
2) The reason why historical data is used in may problems is because Information changes rapidly. The information being circulated currently may be different from that circulated 100 years ago.
Read more about John Locke at; brainly.com/question/9634224
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At 9 weeks he would have enough money to buy the video console.
