q: A train 300 m long is running at a speed of 99 km/hr. In what time will it pass a bridge 195 m long?
Options:
(A) 17
(B) 18
(C) 19
(D) 20
(E) 21
a: Stream of consciousness: Speed = 99 * 5/18 = 55/2 m/sec
Total distance covered = 300 + 195 = 495 m
Required time = 495 * 2/55 = 18 sec The answer is (B).


question: A no.when divided by 225 gives a remainder 43, what remainder will beobtained by dividingthe same no.17?
Options:
(A) 2
(B) 7
(C) 9
(D) 11
(E) 13
answer: Stream of consciousness: 225 + 43 = 268/17 = 13 (Remainder) The answer is (E).


q: Two persons A and B can complete a piece of work in 30 days and 45 days respectively. If they work together, what part of the work will be completed in 6 days?
Options:
(A) 2/5
(B) 1/6
(C) 1/3
(D) 1/9
(E) 2/6
a: Stream of consciousness: A's one day's work = 1/30
B's one day's work = 1/45
(A + B)'s one day's work = 1/30 + 1/45 = 1/18
The part of the work completed in 6 days = 6 (1/18) = 1/3. The answer is (C).


question: A no. when divided by the sum of 555 and 445 gives 2times their difference as quotient & 20 as remainder. Find the no. is?
Options:
(A) 122456
(B) 220020
(C) 220022
(D) 235467
(E) 220026
answer: Stream of consciousness: (555 + 445) * 2 * 110 + 20 = 220000 + 20 = 220020 The answer is (B).


q: 30 pens and 75 pencils were purchased for 690. If the average price of a pencil was 2.00, find the average price of a pen.
Options:
(A) 10
(B) 11
(C) 18
(D) 13
(E) 14
a: Stream of consciousness: Since average price of a pencil = 2
∴ Price of 75 pencils = 150
∴ Price of 30 pens = (690 – 150) = 540
∴ Average price of a pen = 540⁄60 = 18 The answer is (C).


q: The edges of cuboid are 4 cm; 5 cm and 6 cm. Find its surface area?
Options:
(A) 228
(B) 148
(C) 992
(D) 772
(E) 222
a:
Stream of consciousness: 2(4*5 + 5*6 + 4*6) = 148 The answer is (B).