In a certain village, m litres of water are required per household per day. At this rate, if there are n households in the village, how long (in months of 30 days) will p litres of water last? A) 30p/(mn) B) 30pm/n C) p/(30mn) D) pn/(30m)

• Correct Answer is Option (C)
  1 household - m ltr of water per day
  n households - (n*m) ltr of water per day
  for 30 days - 30*(nm) lt of water
  for p ltr of water - p/(30mn) days of water will last. So Option C
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