World Benchmarking Alliance+NAT.C14 Living wage fundamentals+Formula

score = (x) -> 
  if x == "Yes"
    10
  else
    0
  
weights = (1/3 for i in [0...3])
living_wage = [targets, determination, business_relationship_support]

weights.reduce((weighted_sum, weight, index) -> 
              weighted_sum + weight*score(living_wage[index])
             , 0)