Answer:40%
Step-by-step explanation:20 divided by 50 is 0.4 then multiply that by 100 and get 40
9514 1404 393
Answer:
r = 120t/(120-t)
Step-by-step explanation:
Multiply by the denominator, isolate r terms, then divide by the coefficient of r.

Simple interest formula:
Interest = P*R*N
P = principle amount
R = interest rate (in decimal)
N = number of time periods (in years)
Interest = 5000*0.05*4 = $1000