Question

The formula l=prt can be used to find the simple interest earned I, on a principle amount, P, with an interest rate of r, over a time of t. rewrite the formula to find the interest rate if the interest earned,time,and the principle are known
A. r= p/lt
B. r= Pt/l
C. r=l/pt
D. r= lt/p

Answer 1

Answer:

C

Step-by-step explanation:

given I = prt or

prt = I

isolate r by dividing both sides by pt

r = $\frac{I}{pt}$ → C