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44 votes
44 votes
Need to get some help please

User Wtekiela
by
2.9k points

1 Answer

6 votes
6 votes

S=P(1+rt)

start by dividing by p on both sides


\begin{gathered} (S)/(P)=(P)/(P)(1+rt) \\ (S)/(P)=1+rt \end{gathered}

substract 1 on both sides


\begin{gathered} (S)/(P)-1=1+rt-1 \\ (S)/(P)-1=rt \end{gathered}

Divide by t on both sides to solve for r


\begin{gathered} ((S)/(P)-1)((1)/(t))=(rt)/(t) \\ (S)/(Pt)-(1)/(t)=r \end{gathered}

ANSWER


r=(S)/(Pt)-(1)/(t)

User Brovoker
by
2.7k points
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