Compute the project worth of each project at the end of six years with variable MARRs as follows: 10% for n=0 to n=3 and 15% for n=4 to n=6. Compute the project worth of each project at the end of six years with variable MARRs as follows: 10% for n=0 to n=3 and 15% for n=4 to n=6