Due to fall in manpower, the production in a company decreases by 35%. By what percentage should the working hours be increased to restore the original production?
Answer & explanation
Correct answer: option 3
According to the question,
Let's assume there are 100 men.
Man power decreased by 35%;
⇒ Man Power Before : After
100 : 65
20 : 13
⇒ To restore the original production, working hours should be inversely proportional to Man power.
⇒ Man Power α \(\frac{1}{Working hours}\)
Therefore, Working hours Before : After
13 : 20
⇒ Percentage increase = \(\frac{7}{13}\) x 100 = 53.84%