Simple interest formula. Solve the formula for t . A = P + Prt
A) $t = \frac { 1 } { r } \left( \frac { A } { P } + 1 \right)$
B) $t = \frac { 1 } { r } \left( \frac { A } { P } - 1 \right)$
C) $t = \frac { 1 } { P } \left( \frac { A } { r } - 1 \right)$
D) none of these

Question

Quizplus · Accepted Answer

Starting with the given formula:

A = P + Prt

Subtract P from both sides:

A - P = Prt

Divide both sides by Pr:

t = (A - P)/(Pr)

Simplify the expression by factoring out a P in the numerator:

t = (1/r) * [(A/P) - 1]

Therefore, the correct answer is B.

Simple Interest Formula t=1r(AP+1)t = \frac { 1 } { r } \left( \frac { A } { P } + 1 \right)t=r1​(PA​+1)

Simple Interest Formula $t = \frac { 1 } { r } \left( \frac { A } { P } + 1 \right)$