(SI) Simple Interest = 825
(P) Principal = 550
(T) Time = 7
Formula for interest rate:
IR = (SI)(100)/PT
IR = (825)(100)/(550)(7)
IR = 82500/3850
IR = 0.2143
corrections are highly appreciated.
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Answers & Comments
(SI) Simple Interest = 825
(P) Principal = 550
(T) Time = 7
Formula for interest rate:
IR = (SI)(100)/PT
IR = (825)(100)/(550)(7)
IR = 82500/3850
IR = 0.2143
Therefore, the percent of increase in her earnings is 21%
corrections are highly appreciated.