Question: Wednesday occurred on 15th September 2010. What was the day of the week on 15th September 2009?
Options:
(A) Monday
(B) Friday
(C) Wednesday
(D) Tuesday
(E) Sunday
Ans: (D)
CoT: 1 odd day in the year 2009
So, the day on 15th September 2010 will be one day beyond the day on 15th September 2009
But, 15th September 2010 is Wednesday
On 15th September 2009, it was Tuesday
----
Question: X can finish a work in 30 days. Y can finish the same work in 15 days. Yworked for 10 days and left the job. how many days does X alone need to finish the remaining work?
Options:
(A) 3
(B) 10
(C) 6
(D) 8
(E) 9
Ans: (B)
CoT: Work done by X in 1 day = 1/30
Work done by Y in 1 day = 1/15
Work done by Y in 10 days = 10/15 = 2/3
Remaining work = 1 – 2/3 = 1/3
Number of days in which X can finish the remaining work = (1/3) / (1/30) = 10
----
Question: If 4 men can paint 60 m long wall in 3 days, then 5 men can paint 50 m long wall in
Options:
(A) 3days
(B) 2days
(C) 5days
(D) 6days
(E) 1day
Ans: (B)

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
CoT: The length of wall painted by one man in one day = 60 / 4 Ã— 3 = 5 m
No. of days required to paint 50 m wall by 5 men = 50/ 5 Ã— 5 = 2 day.
----