• # question_answer 26) 'A' can do a certain job in 12 days. 'B' is 60% more efficient than 'A'. To do the same job, 'B' alone would take? A) 8 days              B) 10 daysC) $7\frac{1}{2}$ days                 D) 7 days

To do the same job 'B' alone would take $=\frac{100}{160}\times 12$ $=\frac{15}{2}=7\,\,\frac{1}{2}\,\,days$