SSC CGL Official PYQQuantitative Aptitude12 Sep 2025 (Shift 1)
Q.
X is able to complete a task in 12 days, while Y takes 18 days to finish the same task. If they collaborate and work together for 3 days, what fraction of the work will still remain?
A
a) 1/3
B
b) 5/12
C
c) 7/12
D
d) 9/12
Correct Answer: Option C)
Detailed Step-by-Step Explanation:
X 1 day = 1/12, Y 1 day = 1/18. Together 1 day = (3+2)/36 = 5/36. In 3 days = 15/36 = 5/12. Remaining work = 1 – 5/12 = 7/12.