The city of St. John's is intalling a new swimming pool in the east end recreation centre. One design being considered is a reinforced concrete pool that will cost $4,900,000 to install. Thereafter, the inner surface of the pool will need to be refinished and painted every 5 years at a cost of $480,000 per refinishing. Assuming that the pool will have essentially an infinite life, what is the present worth of the costs associated with the pool design? The city uses a MARR of 5%. If the installation costs, refinishing costs, and MARR are subject to 5% or 10% increases or decreases, how is the present worth affected? (NOTE: Text answers are case sensitive and every field in this question is worth equal value)

All calculations are performed using 4 significant figures.

(a) Complete the table below:

Sensitivity Analysis Calculated Values

Parameter	-10%	-5%	Base Case	+5%	+10%
Construction Costs			4,900,000
Refinishing Costs			480,000
MARR [%]			5
Present worth of Costs	-10%	-5%	0%	+5%	+10%
Changes to Construction Costs			6.637E6
Changes to Refinishing Costs			6.637E6
Changes to MARR			6.637E6

(b) To which parameter (Construction Costs [CC], Refinishing Costs [RC], or MARR is the present worth of the project most sensitive? {Enter either 'CC', 'RC', or 'MARR' and the answer is case sensitive}: