20. An existing public park serving 1.8 Million visitor/year is to be improved. Initial cost is SR 2.25 Million and the annual operating and maintenance cost starts with SR 0.145 Million during the first year and increases 3%/year thereafter. The planning horizon is 20 years, the salvage value is 32% of the initial cost, and the interest rate is 12%. The minimum additional benefits/visit that will justify the facility improvement is closest to: a) SR 0.18 b) SR 0.30 c) SR 0.26 d) SR 0.20 21. Riyadh City is planning a public recreational facility with an initial cost of SR 72 Million and a maintenance cost of 800,000/year. Number of people expected to visit the facility is 90,000 person/year. 40% of visitors will receive a benefit of SR 12/visit, 45% will receive SR 18/visit, and 15% will receive SR 28/visit. For a 30-year planning horizon and 10% interest rate, the B/C ratio of the investment is closest to: a) 0.909 b) 0.984 c) 1.069 d) 1.163