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24 votes
24 votes
I = $440, P= 1, r= 5%, t = 4 years

User IFink
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1 Answer

20 votes
20 votes

We have to use the simple interest formula


I=P(1+rt)

Let's replace the given information


440=P(1+0.05\cdot4)

Then, we solve for P.


\begin{gathered} 440=P(1+0.2) \\ 440=P(1.2) \\ P=(440)/(1.2)\approx366.67 \end{gathered}

Hence, the principal is around $366.67.

User William Linton
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