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40 लीटर दूध और पानी के मिश्रण में 10% पानी है। नए मिश्रण में पानी की मात्रा को 20% करने के लिए कितना पानी मिलाना पड़ेगा ?

Mathematics

ScanSolve AI Answer

Answer

5 लीटर

Step-by-step solution

5 steps
  1. Calculate initial water.

    Initial mixture is 40 liters with 10% water.

    पानी=10%×40 लीटर=0.10×40=4 लीटरपानी = 10\% \times 40 \, लीटर = 0.10 \times 40 = 4 \, लीटर

    Milk = 40−4=3640 - 4 = 36 liters.

  2. Let xx liters of water be added.

    New water = 4+x4 + x liters.
    New total = 40+x40 + x liters.

  3. Set up equation for 20% water.

    4+x=20%×(40+x)4 + x = 20\% \times (40 + x) 4+x=0.20(40+x)4 + x = 0.20(40 + x)
  4. Expand right side.

    4+x=8+0.20x4 + x = 8 + 0.20x
  5. Isolate xx.

    x−0.20x=8−4x - 0.20x = 8 - 4 0.80x=40.80x = 4

    x=40.80=5x = \frac{4}{0.80} = 5 liters.

    Final answer:

    5लीटर5 लीटर
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