A and B can do a piece of work in 20 days and 25 days respectively . Efficiency of C is 25% more than the efficiency of B . find the tome taken by C to do the complete work .
Answer & explanation
Correct answer: option 2
Efficiency of C is 25% more than the efficiency of B i.e.
ratio of B : C
4 : 5
as 4R = 4 so, 5r = 5
Efficiency × Days = Total work
time taken by C to complete the work = \(\frac{100}{5}\) = 20 days