XAT 2018 Question 74
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XAT
Research efficiency = (total number of publications)/(total time spent in research)
Prof. Arithmetic: RE = (8) / [90*(0.7 + 0.5 + 0.6)] = 8 / (18 * 9)
Prof. Algebra: RE = (8) / [90*(0.3 + 0.4 + 0.25)] = 8 / (9.5 * 9)
Prof. Geometry: RE = (8) / [90*(0.75 + 0.25 + 2)] = 8 / (12 * 9)
Prof. Calculus: RE = (8) / [90*(0.55 + 0.55 + 0.4)] = 8 / (15 * 9)
Thus, we can observe that Prof. Arithmetic has the lowest efficiency.
Hence, option A is the answer.