Find the simple interest on a loan of 8,500 at 5% per year for 1 year.
a bottle contains 50 tablets, each containing 450 mg of medicine. how many grams of medicine does the bottle contain?

$425 is the amount of simple interest that you would have gained after one year found by using the simple interest formula of s(1±i)^t s=starting amount i=interest amount t=time in years so if we input are numbers 8500(1+.05)^1 which equals 8925 now subtract 8500 to get the amount that you gained. And 22.5 grams Enjoy!=) 

The answer is the first one