A train 250 m long running at 72 kmph crosses a platform in 15 sec. What is the length of the platform?
Options:
(A) 50m
(B) 200m
(C) 250m
(D) 270m
(E) 300 m
Answer and stream of consciousness: (A)
Stream of consciousness: D = 72 * 5/18 = 15 = 300 250 = 50m

A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.157. Find the unknown rate of two blankets?
Options:
(A) 420
(B) 550
(C) 490
(D) 450
(E) 520
Answer and stream of consciousness: (E)
Stream of consciousness: 10 * 157 = 1570
3 * 100 + 5 * 150 = 1050
1570 1050 = 520

A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 40 as remainder. Find the no. is?
Options:
(A) 145646
(B) 236578
(C) 645353
(D) 456546
(E) 220040
Answer and stream of consciousness: (E)
Stream of consciousness: (555 + 445) * 2 * 110 + 40 = 220000 + 40 = 220040

Solve below question 2x + 1 = -23
Options:
(A) -8
(B) -9
(C) -12
(D) -4
(E) 12
Answer and stream of consciousness:
(C)
Stream of consciousness: 1. Subtract 1 from both sides: 2x + 1 - 1 = -23 - 1 2. Simplify both sides: 2x = -24 3. Divide both sides by 2: 4. Simplify both sides: x = -12