question: A farm used two harvesting machines, H and K, to harvest 100 acres of wheat. Harvesting machine H, working alone at its constant rate, harvested 30 acres of wheat in 8 hours. Then harvesting machine K was brought in, and harvesting machines H and K, working together at their respective constant rates, harvested the remaining acres of wheat in 7 hours. Harvesting machine K harvested how many acres of wheat per hour?
Options:
(A) 7
(B) 8
(C) 12
(D) 3
(E) 15
answer: Stream of consciousness: Rate of H = 7 acres/hr
Remaining land to be harvested = 100 - 30 = 70
Rate of H and K = 70/7 = 10 acres/hr
Rate of K = 10 - 7 = 3 The answer is (D).

q: Find the least number must be subtracted from 964807 so that remaining no.is divisible by 8?
Options:
(A) 7
(B) 6
(C) 5
(D) 4
(E) 3
a: Stream of consciousness: On dividing 964807 by 15 we get the remainder 7, so 7 should be subtracted The answer is (A).

question: A man rows his boat 85 km downstream and 45 km upstream, taking 2 1/2 hours each time. Find the speed of the stream?
Options:
(A) 7 kmph
(B) 5 kmph
(C) 3 kmph
(D) 8 kmph
(E) 2 kmph
answer: Stream of consciousness: Speed downstream = d/t = 85/(2 1/2) = 34 kmph
Speed upstream = d/t = 45/(2 1/2) = 18 kmph
The speed of the stream = (34 - 18)/2 = 8 kmph The answer is (D).

q: Express 60 mps in kmph?
Options:
(A) 200
(B) 182
(C) 216
(D) 127
(E) 400
a: Stream of consciousness: 60 * 18/5 = 216 kmph The answer is (C).

question: What is the are of an equilateral triangle of side 4 cm?
Options:
(A) 645
(B) 43
(C) 644
(D) 643
(E) 642
answer: Stream of consciousness: Area of an equilateral triangle = 3/4 S2
If S = 4, Area of triangle = 3/4 * 4 * 4 = 43 cm2; The answer is (B).

question: The sale price shirts listed f or Rs.400 after successive discount is 10% and 5% is?
Options:
(A) 280
(B) 290
(C) Rs.342
(D) 250
(E) 253
answer:
Stream of consciousness: 400*(90/100)*(95 / 100) = 342 The answer is (C).