A football field is 8400 square yards. If 1200 pounds of fertilizer are spread evenly across the entire field, how many pounds of fertilizer were spread over an area of the field totaling 3500 square yards?
Options:
(A) 450
(B) 600
(C) 500
(D) 2400
(E) 3200

Answer A) 4800 yards need 1200 lbs
1 Yard will need 1200/8400 = 1/7 lbs
3600 Yards will need 1/7* 3500 Yards = 500lbs So the answer is: (C).

Which of the following is equal to (x+1)!/x!?
Options:
(A) x-1
(B) 1+(1/x) 
(C) 1
(D) x+1
(E) x

(x + 1)! = (x + 1) * x!
(x + 1)!/x! = x + 1 So the answer is: (D).

The sale price sarees listed for Rs.400 after successive discount is 20% and 5% is?
Options:
(A) 338
(B) 277
(C) 342
(D) 882
(E) 304

400*(80/100)*(95/100) = 304 So the answer is: (E).

If C is the temperature in degrees Celsins and F is the temperature in degrees Fahrenheit, then the relationship between temperatures on the two scales is expressed by the equation 9C=5(F-32). The temperature required to boil liquid A and liquid B differed by 35 degrees on the Fahrenheit scale, by how many degrees did the temperature extremes differ on the Celsius scale?
Options:
(A) a)  17
(B) b)  13
(C) c)  25
(D) d)  45
(E) e)  81

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
The relationship is 9/5 - 32, so approximately half of difference in Celsius (the -32 part won't be used in this case). Just looking at the answer choices you can pick A which is the only number near half of 35. The other answer choices are too far apart so no need to calculate. So the answer is: (A).