math,correction

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Problem #5
Business and finance. Kevin earned $165 interest for 1 year on an investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500?

My answer is: The amount of interest would be $275 earned by an investment of $2500.

Problem #6
Simplify each complex fraction.
((w+3)/(4w)) / ((w-3)/(2w))

My answer is: (w+3)/(2w-6)

Yes for #1. #2 could also be written
(w+3)/([2(w-3)]
It depends upon what you consider "simplified".

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