Answer:
The B/C ratio at 6% per year is closest to 1.17
Explanation:
In order to calculate the B/C ratio at 6% per year we would have to make first the following calculations:
Present Worth(PW) of annual operating cost (excel formula) =PV(0.06,10,160000,0) = $1,177,613.93
PW of annual benefit (excel formula) =PV(0.06,10,250000,0) = $1,840,021.76
Present cost (at beginning of project) = $400,000
Therefore, to calculate the B/C ratio at 6% we would use the following formula:
B/C ratio at 6%=PW of benefits-PW of disbenefits/Initial cost+PW of operating and maintenance-PW of salvage value
B/C ratio = ($1,840,021.76 - 0)/($400,000 - $1,177,613.93) = 1.17
