పాలు-నీటి మిశ్రమంలో 2/3 వంతు పాలు. 21 లీటర్ల మిశ్రమం ఉంది. ఒకవేళ దానికి 4 లీటర్ల నీరు కలిపినట్లయితే, అప్పుడు కొత్త మిశ్రమంలో పాల శాతాన్ని కనుగొనండి.

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RRB ALP Previous Paper 2 (Held On: 9 Aug 2018 Shift 2)
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  1. 44
  2. 56
  3. 14
  4. 11

Answer (Detailed Solution Below)

Option 2 : 56
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Detailed Solution

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మొత్తం ఘనపరిమాణం = 21 లీటర్లు

పాలు-నీటి మిశ్రమంలో 2/3 వంతు పాలు,

 ⇒ పాల ఘనపరిమాణం = 2/3 × 21 = 14 లీటర్లు

⇒ నీటి ఘనపరిమాణం = 21 – 14 = 7 లీటర్లు

దీనికి 4 లీటర్ల నీరు జోడించబడింది,

⇒ కొత్త ఘనపరిమాణం = 7 + 4 = 11 లీటర్లు.

⇒ మిశ్రమం యొక్క మొత్తం ఘనపరిమాణం = 14 + 11 = 25

∴ పాల శాతం = 14/25 × 100 = 56%

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