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How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously?
I. A can fill the tank in 16 minutes.
II. B can empty the full tank in 8 minutes.
  • a)
    I alone sufficient while II alone not sufficient to answer
  • b)
    II alone sufficient while I alone not sufficient to answer
  • c)
    Either I or II alone sufficient to answer
  • d)
    Both I and II are necessary to answer
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
How long will it take to empty the tank if both the inlet pipe A and t...
I. A’s 1 minute’s filling work = 1/16
II. B’s 1 minute’s filling work =1/8
(A + B)’s 1 minute’s emptying work
= (1/8 – 1/16) =1/16
∴ Tank will be emptied in 16 minutes.
Thus, both I and II are necessary to answer the question.
∴ Correct answer is (d).
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How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously?I. A can fill the tank in 16 minutes.II. B can empty the full tank in 8 minutes.a)I alone sufficient while II alone not sufficient to answerb)II alone sufficient while I alone not sufficient to answerc)Either I or II alone sufficient to answerd)Both I and II are necessary to answerCorrect answer is option 'D'. Can you explain this answer?
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How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously?I. A can fill the tank in 16 minutes.II. B can empty the full tank in 8 minutes.a)I alone sufficient while II alone not sufficient to answerb)II alone sufficient while I alone not sufficient to answerc)Either I or II alone sufficient to answerd)Both I and II are necessary to answerCorrect answer is option 'D'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously?I. A can fill the tank in 16 minutes.II. B can empty the full tank in 8 minutes.a)I alone sufficient while II alone not sufficient to answerb)II alone sufficient while I alone not sufficient to answerc)Either I or II alone sufficient to answerd)Both I and II are necessary to answerCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously?I. A can fill the tank in 16 minutes.II. B can empty the full tank in 8 minutes.a)I alone sufficient while II alone not sufficient to answerb)II alone sufficient while I alone not sufficient to answerc)Either I or II alone sufficient to answerd)Both I and II are necessary to answerCorrect answer is option 'D'. Can you explain this answer?.
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