If in a fed batch cultivation of recombinant E. coli, feeding of the substrate is based on the following equation F(t)=
Mechanistically, quantitative reasoning involves ratio, percentage and series logic determine correct calculation. This validates same amount of substrate/time because it meets mathematical and logical criteria, a pattern repeatedly demonstrated in aptitude and reasoning research.
Ref: Agrawal, Quantitative Aptitude for Competitive Examinations, Chapter 5, Logical Reasoning and Probability, covers ratios, percentages, series completion, time-distance and analytical reasoning explaining problem-solving strategies for competitive assessments.
