(Ans). (C)
(Question). A train 150 m long running at 72 kmph crosses a platform in 25 sec. What is the length of the platform?
Options:
(A) 338
(B) 277
(C) 350
(D) 881
(E) 271
(CoT). D = 72 * 5/18 = 25 = 500 150 = 350

(Ans). (C)
(Question). In a class, the average age of 45 boys is 10 years and the average of 15 girls is 10 years. what is the average age of the whole class?
Options:
(A) 12 Years
(B) 12.3 Years
(C) 10 Years
(D) 13 Years
(E) 15 Years
(CoT). Total age of 60 students
(45X 10+15 X 10) = 630
Average = 600/60 = 10 Years

(Ans). (A)
(Question). If a man can cover 8 metres in one second, how many kilometres can he cover in 3 hours 45 minutes?
Options:
(A) 108
(B) 180
(C) 107
(D) 168
(E) 122
(CoT). 8 m/s = 8 * 18/5 kmph
3 hours 45 minutes = 3 3/4 hours = 15/4 hours
Distance = speed * time = 8 * 18/5 * 15/4 km = 108 km.

(Ans). (E)
(Question).
Find the value of y from (12)^3 x 6^4432 =y?
Options:
(A) 4363
(B) 4765
(C) 4879
(D) 6789
(E) 5184
(CoT). Given Exp. = (12)3 x 64 = (12)3 x 64 = (12)2 x 62 = (72)2 = 5184
432 12 x 62