ఒక కోటలో 1200 మంది సైనికులు 28 రోజులకు సరిపడా ఆహారం తీసుకున్నారు. 4 రోజుల తరువాత, కొంతమంది సైనికులు కోటను విడిచిపెట్టారు. ఈ విధంగా, 32 రోజులు ఆహారం కొనసాగింది, ఎంత మంది సైనికులు కోటను విడిచిపెట్టారు?

This question was previously asked in
RRC Group D Previous Paper 13 (Held On: 11 Oct 2018 Shift 1)
View all RRB Group D Papers >
  1. 280
  2. 300
  3. 320
  4. 290

Answer (Detailed Solution Below)

Option 2 : 300
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Detailed Solution

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కోటను విడిచిపెట్టిన సైనికుల సంఖ్య x గా ఉండనివ్వండి.

మనకు తెలిసినట్లుగా,

M 1 × D 1 = M 2 × D 2 + M 3 × D 3

ఇచ్చిన, M 1 = 1200 సైనికులు, D 1 = 28 రోజులు, M 2 = 1200 సైనికులు, D 2 = 4 రోజులు, M 3 = (1200 – x) సైనికులు మరియు D 3 = 32

M 1 × D 1 = M 2 × D 2 + M 3 × D 3

1200 × 28 = 1200 × 4 + (1200 – x) × 32

(1200 × 28) – (1200 × 4) = (1200 – x) × 32

1200 (28 – 4) = (1200 – x) × 32

(1200 × 24)/32 = (1200 – x)

x = 300
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