If Anju is 30% more efficient than Bitt, then how much time will they take, working together, to complete a job which Anju alone could have done in 23 days?
Answer & explanation
Correct answer: option 1
Anju is 30% more efficient than Bitt,
⇒ Anju : Bitt
Efficiency 130 : 100
13 : 10
Here, Anju can do total work in 23 days, therefore total work is = 13 x 23 =299 units. ..( Efficiency × Days = Total work )
⇒ Time taken to complete the work together = \(\frac{299}{13 + 10}\) = \(\frac{299}{23}\) = 13 days
Therefore, it will take 13 days for both of them to complete the work.