Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in:
  • 17.5 hr
  • 28 hr
  • 38.5 hr
  • 410 hr
Answer:- 1
Explanation:-

Solution:
Work done by all the tanks working together in 1 hour,
⇒110+112−120=215

Hence, tank will be filled in
152
= 7.5 hour.

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Hence, tank will be filled in
152
= 7.5 hour.

", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "
Solution:

Work done by all the tanks working together in 1 hour,

⇒110+112−120=215

Hence, tank will be filled in
152
= 7.5 hour.

", "dateCreated": "7/24/2019 10:09:12 AM" } }
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