Question

in how many years will rupees 800 compound to rupees 882 at 5% per annum compounded annually

Answer 1

In 2 Years.
800 Price.
1st year interest @ 5% is 40.

Now price is 800 + 40 = 840.

2nd year interest @ 5% is 42.
Now Price is 840 + 42 = 882.

So the Ans is 2 Years.