Sarthak and Mohan have been assigned a work to design a room for a ceremony, Sarthak can design the entire room in 12 days, while Mohan can design the room in 15 days. In how many days will the work be completed if they work together? (Rounded off to 2 decimal places).
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 6.67.
Given:
Sarthak can design the entire room in 12 days, while Mohan can design the room in 15 days
Calculations:
Total work (L.C.M of 12 and 15) = 60 units
The efficiency of Sarthak = 60/12 = 5
The efficiency of Mohan = 60/15 = 4
Required time taken = 60/(5 + 4) = 60/9 = 6.67 days