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08 Apr 2025, 00:30
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
63% (02:17) correct
37%
(01:46)
wrong
based on 222
sessions
History
Date
Time
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Not Attempted Yet
Two typists P and Q work individually for 6 hours a day. What is the difference between the average number of pages typed per hour by person P on a single day and the average number of pages typed per hour by person Q on the single day?
(1) The typing speed of the person P is constant and is 10 pages per hour, whereas the typing speed of person Q is 19 pages per hour for initial three hours on the same day.
(2) Twice the average number of pages typed by person Q in one hour is 3.8 times the average number of pages typed by person P in one hour.
(1) The typing speed of the person P is constant and is 10 pages per hour, whereas the typing speed of person Q is 19 pages per hour for initial three hours on the same day.
(2) Twice the average number of pages typed by person Q in one hour is 3.8 times the average number of pages typed by person P in one hour.
08 Apr 2025, 03:05
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Let daily avg speed for each typist be P and Q
Hours worked daily = 6hr
Statement 1
P = 10
Q = 19 for initial three hours
However, we don't know the avg speed for Q for the last 3 hours
Insufficient
Statement 2
2Q = 3.8P
Q = 1.9P
Difference = Q-P = 1.9P - P = 0.9P
However, we don't know the value of P
Combined, we have the value of P= 10, so the difference between the average number of pages typed per hour is 9 pages/hour
Hours worked daily = 6hr
Statement 1
P = 10
Q = 19 for initial three hours
However, we don't know the avg speed for Q for the last 3 hours
Insufficient
Statement 2
2Q = 3.8P
Q = 1.9P
Difference = Q-P = 1.9P - P = 0.9P
However, we don't know the value of P
Combined, we have the value of P= 10, so the difference between the average number of pages typed per hour is 9 pages/hour
Bunuel
08 Apr 2025, 03:19
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Q : | Pavg - Qavg | =
1. Pavg = 10 , Q(Avg for 3 hours)= 19. no info on remaining 3 hours of Q. Insufficient.
2. 2 Qavg = 3.8 Pavg => Qavg = 1.9 Pavg => | Pavg - Qavg | = | 0.9 Pavg | .. No value of Pavg or Qavg given. Insufficient.
Combined, taking Pavg =10 (Statement 1)
| Pavg - Qavg | = | 0.9 Pavg | = | -9 | = 9 Sufficient. C is correct
Note : I have doubts on language of statement two. it said average no of pages in one hour
while Argument had Average number of pages per hour in single day. So I am little skeptical. Waiting fir OA.
1. Pavg = 10 , Q(Avg for 3 hours)= 19. no info on remaining 3 hours of Q. Insufficient.
2. 2 Qavg = 3.8 Pavg => Qavg = 1.9 Pavg => | Pavg - Qavg | = | 0.9 Pavg | .. No value of Pavg or Qavg given. Insufficient.
Combined, taking Pavg =10 (Statement 1)
| Pavg - Qavg | = | 0.9 Pavg | = | -9 | = 9 Sufficient. C is correct
Note : I have doubts on language of statement two. it said average no of pages in one hour
while Argument had Average number of pages per hour in single day. So I am little skeptical. Waiting fir OA.
08 Apr 2025, 04:51
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We are asked:
What is the difference between the **average pages per hour** typed by P and Q in one day (6 hours)?
Let’s denote:
P_avg = average pages per hour typed by P
Q_avg = average pages per hour typed by Q
We want to find: |P_avg − Q_avg|
Statement (1):
P types at a constant rate of 10 pages/hour
Q types at 19 pages/hour for first 3 hours; rest is unknown
→ Not enough info about Q’s speed in last 3 hours → Cannot find Q_avg → Insufficient
Statement (2):
2 × Q_avg = 3.8 × P_avg
→ Gives us a ratio: Q_avg / P_avg = 1.9
So Q_avg = 1.9 × P_avg
But we still don’t know the exact value of either P_avg or Q_avg → Cannot find actual difference → Insufficient
Combining (1) and (2):
From (1): P_avg = 10
From (2): Q_avg = 1.9 × P_avg = 1.9 × 10 = 19
→ Difference = 19 − 10 = 9
Now we can compute the exact difference.
Statements together → Sufficient
Answer: C
What is the difference between the **average pages per hour** typed by P and Q in one day (6 hours)?
Let’s denote:
P_avg = average pages per hour typed by P
Q_avg = average pages per hour typed by Q
We want to find: |P_avg − Q_avg|
Statement (1):
P types at a constant rate of 10 pages/hour
Q types at 19 pages/hour for first 3 hours; rest is unknown
→ Not enough info about Q’s speed in last 3 hours → Cannot find Q_avg → Insufficient
Statement (2):
2 × Q_avg = 3.8 × P_avg
→ Gives us a ratio: Q_avg / P_avg = 1.9
So Q_avg = 1.9 × P_avg
But we still don’t know the exact value of either P_avg or Q_avg → Cannot find actual difference → Insufficient
Combining (1) and (2):
From (1): P_avg = 10
From (2): Q_avg = 1.9 × P_avg = 1.9 × 10 = 19
→ Difference = 19 − 10 = 9
Now we can compute the exact difference.
Statements together → Sufficient
Answer: C
