Question

Given the formula I = Prt, which shows an equation solving for r?

a) r = I/Pt
b) r = I/P
c) r = Pt/I
d) r = I/tP

Answer 1

To solve for the variable r in the equation I = Prt, you isolate r by dividing both sides by Pt, resulting in r = I/Pt.

Step-by-step explanation:

The student is asking to solve for the variable r in the equation I = Prt, which is used to calculate simple interest where I is the interest earned, P is the principal amount, r is the rate of interest, and t is the time. To solve for r, we need to isolate r on one side of the equation. This can be done by dividing both sides of the equation by Pt:

I = Prt
r = I / Pt

Therefore, the correct answer is a) r = I/Pt.