is
planning an expansion project with annual cash inflows of 4 billion
tenge (y1), 5 billion tenge (y2), 6 billion tenge (y3), 7 billion
tenge (y4) and 10 billion tenge (y5). Given the discount rate of
20% what will be the discounted payback period for these cash flows
if the initial cost is 15 billion tenge (y0)?