I need help solving this problem. Pls help me by answering and showing step by step.

Question 2: The Condominium Union was planning to build another low-rise 3-oor apartment in North Austin in 2015. Total gross area was estimated to be 32,000 square foot, normal story height, with 100 units. The exterior wall was face brick with concrete block back-up (steel joists). The appliances for each unit include 72\" wide combination range, reigerator & sink, 16lb gas dryer and 4 cycle washer. a. What is the estimated cost to build the exterior wall and to purchase the appliances of this apartment in North Austin in 2015 (use total weighted average for city indexes)? b. This project ends up being delayed for 24 months. Assume that project cost increases by 2.6% per year. What is the estimated project cost in North Austin in 2017? (Use: (1) Apartment (1-3 story) Square Foot Natiorzal Cost 2015, (2)Assembly City Cost Indexes 2015- total weighted average for city indexes) DIV. TENNESSEE TEXAS NO. BUILDING SYSTEMS NASHVILLE ABILENE AMARILLO MAT AUSTIN INST. TOTAL MAT BEAUMONT INST TOTAL MAT. A Substructure INST. TOTAL MAT INST. TOTAL MAT 93.1 73.6 81.2 INST. TOTAL 95.9 68. 79.3 B10 95.4 65.5 Shell: Superstructure 77.2 95. 66.5 98.9 77.7 91.0 79.1 91.1 103.4 69.7 78.0 66.9 B20 89.1 100.4 Exterior Closure 64.2 86.2 99.3 94.8 63.4 60.9 85.2 94.8 78.6 99.7 64.2 69.9 85.0 B30 82.7 104.5 Roofing 63.8 85.1 95.6 103.8 56.9 61.9 82.8 81.4 105.3 100.0 67.1 64.5 87.5 85.8 98.0 64.3 C 85.2 Interior Construction 104.3 65.6 89.6 101.9 99.3 66.7 66.5 88.5 85.6 95.1 66.4 D10 83.1 99.0 Services: Conveying 59.3 82.4 100.0 100.0 85.1 58.2 82.5 95.9 100.0 92.9 63.2 84.1 80.5 D20 - 40 95.6 100.0 Mechanical 70.1 91.8 100.0 100.0 83.2 95.4 84.0 93.5 100.3 100.0 86.2 96.2 49.0 D50 Electrical 79.6 100.0 54.9 81.8 100.1 97.6 60.1 84.0 63.1 100.2 64.1 79.4 99.3 85.6 48.7 72.5 101.1 E 64.1 Equipment & Furnishings 81.6 96.8 100.0 63.9 79.4 95.2 65.9 98.3 100. 70.6 82.2 66.9 G 98.3 100. Site Work 57.0 97.8 100.0 59.8 98.7 97.3 97.9 100.0 62.1 97.8 100.2 98.1 88.7 A-G 92.3 WEIGHTED AVERAGE 97.8 88.6 91.5 102.9 88.3 98.4 74.1 92.9 87.8 99.7 91.7 89.9 62.2 90.4 83.3 100.2 63.2 84.1 100.0 63.6 84.1 97.4 68.6 84.9Costs per square foot of floor area S.F. Area 8000 12000 15000 19000 22500 25000 29000 32000 36000 Exterior Wall L.F. Perimeter 213 280 330 350 400 433 442 480 520 Face Brick with Concrete Wood Joists 191.50 182.30 178.70 171.20 169.45 168.25 164.15 163.50 162.15 Block Back-up Steel Joists 192.80 184.90 181.75 175.65 174.10 173. 5 169.85 169.25 168.20Common additives Description Unit $ Cost Description Unit $ Cost Appliances Closed Circuit Surveillance, One station Cooking range, 30" free standing Camera and monitor Each 1975 1 oven Each 570-2425 For additional camera stations, add Each 1050 2 oven Each 1425-2875 Elevators, Hydraulic passenger, 2 stops 30" builtin 2000# capacity Each 67,600 1 oven Each 845 -2050 2500# capacity Each 69,200 2 oven 10 Each 1700-2525 3500# capacity Each 73,200 Counter top cook tops, 4 burner Each 425 - 1650 Additional stop, add Each 8575 Microwave oven Each 291 - 825 Emergency Lighting, 25 watt, battery operated combination range, reing. & sink, JU wide Loch Lead battery Each 320 72 wide Each 2850 Nickel cadmium Each 885 Combination range, refrigerator, sink, Laundry Equipment microwave oven & icemaker Each 6625 Dryer, gas, 16 lb. capacity Each 965 Compactor, residential, 4-1 compaction Each 820 - 1300 30 lb. capacity Each 3800 Dishwasher, built-in, 2 cycles Each 595 - 1125 Washer, 4 cycle Each 1175 4 cycles Each 745 - 1875 Commercial Each 1600 Garbage disposer, sink type Each 228-370 Smoke Detectors Hood for range, 2 speed, vented, 30" wide Each 320 - 1250 Ceiling type Each 223 42" wide Each 425 - 2600 Duct type Each 555 Refrigerator, no frost 10-12 C.F. Each 550-635 18-20 C.F. Each 800 - 1775