Find the Net Present Value and Internal Rate of Return if given the following data ( Assume the weighted average cost of capital is = 11%) :

NPV = -10000 + 200/( 1 + i)^1 + 6000/( 1 + i)^2 + 3500/( 1 + I )^3 + 3500/( 1 + i)^4

Also, find the payback Period, discounted payback period, and the modified Rate of Return. (Use a reinvestment rate of 3% for the modified Rate of Return).