Gup.est: ms zling deposited 850 in a savings account that paid 4.25% p.a.simple interest. what was the balance at the end of 2 years
I added p.a. (per annum because it really needed to be included in the question)
I = P x r x t
I = 850 x 0.0425 x 2
I = ..
After you get I, you have to add it to $850 to get the total.
+118654 
