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# What is this math problem?

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- PuzzlingLv 72 months ago
The formula for *simple* interest is:

I = Prt

P : Principal (1750)

r : annual interest rate as a decimal (0.02)

t : time in years (9)

Just plug those values in:I = 1750 * 0.02 * 9

I = 315

It's more common to find *compound* interest in real life, but this is Math World where it's easier to start with simple interest.

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