A is 40% more efficient than B and C is 20% less efficient than B. Working together, they can finish a task in 15 days. In how many days, will B alone complete 75% of the task?
A. 36
B. 48
C. 32
D. 44
Answer: Option A
Solution (By Examveda Team)
$$\eqalign{ & \left( {7 + 5 + 4} \right) \times 15 \times \frac{{75}}{{100}} = {\text{B}} \times 5 \cr & {\text{B}} = 36{\text{ days}} \cr} $$
This Question Belongs to Arithmetic Ability >> Time And Work
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