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Two pipes supply waters to a cistern whose capacity of 15 cubic feet. How long does it take the two pipes to fill the cistern?
1. The first pipe supplies water at a rate (per minute) that is thrice faster than the second pipe.
2. The pipes fill 8 cubic feet of the tank in ten minute.
  • a)
    Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
  • b)
    Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
  • c)
    BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question ask
  • d)
    EACH statement ALONE is sufficient to answer the question asked.
  • e)
    Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Two pipes supply waters to a cistern whose capacity of 15 cubic feet. ...
The capacity of cistern is 15 cubic feet.
In statement 1, let the second pipe supply water a rate of x feet per minute. The rate of the first pipe is 3x feet per minute. Thus, the statement is insufficient.
In statement 2, the pipes fill 8 cubic feet in 10 minute. Therefore, 15 cubic feet will be filled in (15 × 10)/8 = 18.75 minutes. Hence, the statement is sufficient.
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Most Upvoted Answer
Two pipes supply waters to a cistern whose capacity of 15 cubic feet. ...
Statement 1:
The first pipe supplies water at a rate (per minute) that is thrice faster than the second pipe.

This statement provides information about the relative rates of the two pipes. Let's assume that the second pipe fills the cistern in 'x' minutes. Therefore, the first pipe, which is thrice as fast, will fill the cistern in 'x/3' minutes.

Statement 2:
The pipes fill 8 cubic feet of the tank in ten minutes.

This statement provides information about the combined rate of both pipes. In ten minutes, the pipes fill 8 cubic feet of the tank.

Combined analysis:
From statement 1, we know that the first pipe fills the cistern in 'x/3' minutes, and the second pipe fills it in 'x' minutes.

In one minute, the combined rate of both pipes is (1/x + 1/(x/3)) = (1/x + 3/x) = 4/x.

From statement 2, we know that in ten minutes, the pipes fill 8 cubic feet of the tank.

Therefore, in one minute, the combined rate of both pipes is 8/10 = 4/5.

Now we have two equations:
4/x = 4/5
x = 5

Conclusion:
We can determine that it takes the second pipe 5 minutes to fill the cistern on its own. Therefore, statement 2 alone is sufficient to answer the question, but statement 1 alone is not. Hence, the correct answer is option B.
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Two pipes supply waters to a cistern whose capacity of 15 cubic feet. How long does it take the two pipes to fill the cistern?1. The first pipe supplies water at a rate (per minute) that is thrice faster than the second pipe.2. The pipes fill 8 cubic feet of the tank in ten minute.a)Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.b)Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.c)BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question askd)EACH statement ALONE is sufficient to answer the question asked.e)Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.Correct answer is option 'B'. Can you explain this answer? for GMAT 2025 is part of GMAT preparation. The Question and answers have been prepared according to the GMAT exam syllabus. Information about Two pipes supply waters to a cistern whose capacity of 15 cubic feet. How long does it take the two pipes to fill the cistern?1. The first pipe supplies water at a rate (per minute) that is thrice faster than the second pipe.2. The pipes fill 8 cubic feet of the tank in ten minute.a)Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.b)Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.c)BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question askd)EACH statement ALONE is sufficient to answer the question asked.e)Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for GMAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two pipes supply waters to a cistern whose capacity of 15 cubic feet. How long does it take the two pipes to fill the cistern?1. The first pipe supplies water at a rate (per minute) that is thrice faster than the second pipe.2. The pipes fill 8 cubic feet of the tank in ten minute.a)Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.b)Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.c)BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question askd)EACH statement ALONE is sufficient to answer the question asked.e)Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.Correct answer is option 'B'. Can you explain this answer?.
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