SOLUTION: Chris has ridden 64 miles of a bike course. The course is 80 miles long. What percentage of the course has Chris ridden so far?

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Question 978090: Chris has ridden 64 miles of a bike course. The course is 80
miles long. What percentage of the course has Chris ridden so far?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

if Chris has ridden 64 miles of a bike course the course is 80
miles long, he has ridden x% or x%2F100 miles of 80
miles
so, 64=%28x%2F100%2980
64=%28x%2F10%298
64=8x%2F10
64%2A10=8x
640%2F8=x
x=80
your answer is:Chris has ridden 80% of the course so far