Question

Given I=prt,where I=4.5,p =500,and t=2.5,what is r as a percent?

Answer 1

PLUG in the numbers 
4.5=500 x R x 2.5
divide both sides by 500
0.009=R x 2.5
divide 2.2 to both sides 
R=.0036
In percent you have to multiply by 100 which is 0.36%