Question : A and B can do a work in
Option 1: 20
Option 2: 32
Option 3: 24
Option 4: 36
Correct Answer: 24
Solution :
Use :
Work = Efficiency × Time
According to the question
LCM of
⇒ Efficiency of A and B = 720 ×
⇒ Efficiency of B and C =
⇒ Efficiency of A and C =
Total Time Taken by A, B, and C to Complete Work =
Now,
Time Taken by A, B, and C to complete the 60 % of the work
=
=
=
=
Hence, the correct answer is 24.
SSC CGL Complete Guide
Candidates can download this ebook to know all about SSC CGL.
