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      Question

      In a family of 12, the men eat on average 70 kg

      of food and women eat on an average 50 kg of food. The men and women are equal in number. A woman joined the family for dinner and the average consumption became 60 kg. How much did woman eat (in kgs)?
      A 115 Correct Answer Incorrect Answer
      B 85 Correct Answer Incorrect Answer
      C 70 Correct Answer Incorrect Answer
      D 60 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      As men and women are equal so , there are 6 women and 6 men so, total consumption will be 70 × 6 = 420 (by men) and 50 × 6 = 300 (by women)
      Total consumption = 720 kg
      But after including a woman the average consumption for 13 people is given to be 60.
      So the total consumption will be 60 × 13 = 780 kg
      So, woman’s consumption will be = 780 – 720 = 60 kg

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