Due to reduction in workforce, the production in a factory decreases by 30%. By what percentage should the working hours per person be increased to restore the original production? (Correct to two decimal places.)
Answer & explanation
Correct answer: option 2
30% = \(\frac{3}{10}\)
Ratio of , Initial : New
Production 10 : 7
Working hours 7 : 10
{ Total production = Price × Working hours }
So Increased percentage of working hours = \(\frac{10-7}{7}\) × 100
= \(\frac{3}{7}\) × 100
= 42.86% (approx.)