Calculate n (number of time periods) and i (interest rate PER PERIOD)

Hi! Can someone help how to do it?

•You can earn 12% Simple Interest by investing with MYBank.  Calculate n (number of time periods) and i (interest rate PER PERIOD)

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•3 years with interest paid half yearly (semi annually)

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•1.5 years with interest paid monthly

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•182 days with interest paid yearly

Thank you!