a) 60%
b) 66.66%
c) 40%
d) 33.33%
Answer: c
Explanation: Men × Time = Work
100 × 1 = 100 unit work
150 × 1 = 150 unit work
Extra man power = 50
But, new workers are $$\frac{5}{4}$$ time as efficient as existing workers
So, Actual no. of workers = $$\frac{{50}}{{\frac{5}{4}}}$$ = 40 workers
% required = $$\frac{{40 \times 100}}{{100}} = 40\% $$
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