An agency entrusted to accredit colleges looks at four parameters: faculty quality (F), reputation (R), placement quality (P), and infrastructure (I). The four parameters are used to arrive at an overall score, which the agency uses to give an accreditation to the colleges. In each parameter, there are five possible letter grades given, each carrying certain points: A (50 points), B (40 points), C (30 points), D (20 points), and F (0 points). The overall score for a college is the weighted sum of the points scored in the four parameters. The weights of the parameters are 0.1, 0.2, 0.3 and 0.4 in some order, but the order is not disclosed. Accreditation is awarded based on the following scheme:Eight colleges apply for accreditation, and receive the following grades in the four parameters (F, R, P, and I):It is further known that in terms of overall scores: 1. High Q is better than Best Ed; 2. Best Ed is better than Cosmopolitan; and 3. Education Aid is better than A-one.
Question: 1
What is the weight of the faculty quality parameter?
The correct answer is (D): Let a, b, c and d be the weights of parameters F, R, P and I respectively. Given, (i) 30a + 20b + 20c + 40d > 40a + 30b + 20c + 20d (ii) 40a + 30b + 20c + 20d > 40a + 20b + 20c + 30d (iii) 50a + 50b + 40c + 50d > 50a + 50b + 50c + 40d From (i), 2d > a + b From (ii), b > d From (iii), d > c ⇒ b > d > c a, b, c and d are 0.1, 0.2, 0.3 and 0.4 in any order. d cannot be 0.1 or 0.2. (∵ 2d cannot be greater than a + b) d can be 0.3 or 0.4, but given b > d. ⇒ b = 0.4, d = 0.3 2(0.3) > 0.4 + a a < 0.2 a = 0.1, c = 0.2 Weight of faculty parameter is 0.1. Ans : 0.1
Was this answer helpful?
0
0
Question: 2
How many colleges receive the accreditation of AAA?
Let a, b, c and d be the weights of parameters F, R, P and I respectively. Given, (i) 30a + 20b + 20c + 40d > 40a + 30b + 20c + 20d (ii) 40a + 30b + 20c + 20d > 40a + 20b + 20c + 30d (iii) 50a + 50b + 40c + 50d > 50a + 50b + 50c + 40d From (i), 2d > a + b From (ii), b > d From (iii), d > c ⇒ b > d > c a, b, c and d are 0.1, 0.2, 0.3 and 0.4 in any order. d cannot be 0.1 or 0.2. (∵ 2d cannot be greater than a + b) d can be 0.3 or 0.4, but given b > d. ⇒ b = 0.4, d = 0.3 2(0.3) > 0.4 + a a < 0.2 a = 0.1, c = 0.2 Three colleges received AAA rating. Ans : 3
Was this answer helpful?
0
0
Question: 3
What is the highest overall score among the eight colleges?
Let a, b, c and d be the weights of parameters F, R, P and I respectively. Given, (i) 30a + 20b + 20c + 40d > 40a + 30b + 20c + 20d (ii) 40a + 30b + 20c + 20d > 40a + 20b + 20c + 30d (iii) 50a + 50b + 40c + 50d > 50a + 50b + 50c + 40d From (i), 2d > a + b From (ii), b > d From (iii), d > c ⇒ b > d > c a, b, c and d are 0.1, 0.2, 0.3 and 0.4 in any order. d cannot be 0.1 or 0.2. (∵ 2d cannot be greater than a + b) d can be 0.3 or 0.4, but given b > d. ⇒ b = 0.4, d = 0.3 2(0.3) > 0.4 + a a < 0.2 a = 0.1, c = 0.2 Height overall score among the eight colleges is 48. Ans : 48
Was this answer helpful?
0
0
Question: 4
How many colleges have overall scores between 31 and 40, both inclusive?
The correct answer is (C): Let a, b, c and d be the weights of parameters F, R, P and I respectively. Given, (i) 30a + 20b + 20c + 40d > 40a + 30b + 20c + 20d (ii) 40a + 30b + 20c + 20d > 40a + 20b + 20c + 30d (iii) 50a + 50b + 40c + 50d > 50a + 50b + 50c + 40d From (i), 2d > a + b From (ii), b > d From (iii), d > c ⇒ b > d > c a, b, c and d are 0.1, 0.2, 0.3 and 0.4 in any order. d cannot be 0.1 or 0.2. (∵ 2d cannot be greater than a + b) d can be 0.3 or 0.4, but given b > d. ⇒ b = 0.4, d = 0.3 2(0.3) > 0.4 + a a < 0.2 a = 0.1, c = 0.2 No college has score between 31 and 40 (both inclusive). Ans : 0
