process A
process B
formation requires 2 As for each B
overall efficiency = (rate of product formation) / (machinery A + machinery B)
example
process A = 10 * 0.5 = 5
process B = 10 * 0.5 = 5
formation of product 5 of A + 2.5 of B
total efficiency is 2.5 / 20 = 0.125
increase efficiency by
machinery A up to 20 --> efficiency goes to 5/30 = 0.167
or decrease B down to 5 --> 2.5 / 15 = 0.167
