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anonymous

  • one year ago

0.8 portion of a tank is filled with water. If 25 litres of water is taken out from the tank, 14 litres of excess water over the half filled up tank remains in it. Find the capacity of the tank.

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  1. Jhannybean
    • one year ago
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    So this is going to be a proportionality of how much water the tank can hold at what point.

  2. anonymous
    • one year ago
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    options are (a) 100 litres (b) 130 litres (c) 200 litres (d) 150 litres Ans-(b)

  3. anonymous
    • one year ago
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    bt i dnt know how come the ans is coming

  4. Jhannybean
    • one year ago
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    So if we let c represent the capacity of the tank, then lets see what 0.8 portion of the tank would be like.. |dw:1440402765782:dw|

  5. Jhannybean
    • one year ago
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    Then it says 25 L of the 4/5ths capacity is taken out, this can be represented as: \[0.8c - 25\] Then it says that 14 L of `excess` water water `remains` over `half` the tank's capacity. that can be represented as : \[0.5c + 14\] we can equate these two to find the capacity \(c\) of the tank. \[0.8c - 25 = 0.5c + 14\] Now just solve for \(c\) andyou'llfind your answer.

  6. anonymous
    • one year ago
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    i must say u r very brilliant ....thanx :)

  7. Jhannybean
    • one year ago
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    no problem, your welcome!

  8. Empty
    • one year ago
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    @yashiii she's smart AND pretty :O

  9. anonymous
    • one year ago
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    i think it would be 0.4c+ 14 ,because it is saying water is half filled ,..i am confused

  10. Jhannybean
    • one year ago
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    when you think of half, you think of 0.5 or \(\frac{1}{2}\)

  11. anonymous
    • one year ago
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    hehe..okay @Empty

  12. anonymous
    • one year ago
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    i am not getting that equation,how we are equating those quations @Jhannybean

  13. Empty
    • one year ago
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    I was talking about @Jhannybean not you @yashiii sorry for the confusion...

  14. anonymous
    • one year ago
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    hahhhahahah,i knew already rofl @Empty

  15. Jhannybean
    • one year ago
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    we have to set them equal to eachother because one, we given how much water is taken OUT at a certain capacity, and two, you are told how much excess water remains when the tank is at half capacity after the 25 L are taken out

  16. Jhannybean
    • one year ago
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    so you set them equal to eachother to find the general capacity of the tank

  17. anonymous
    • one year ago
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    thankyou so much.got it :)

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