9
Q:
A) 10 | B) 12 |
C) 13 | D) 15 |
Answer: A) 10
Explanation:
Explanation:
One day work of Raghu and Sam together = 1/12 + 1/15 = 9/60 = 3/20
Aru efficiency = 2/3 of (Raghu + Sam)
Number of days required for Aru to do thw work alone = 3/2 x 20/3 = 10 days.