Question
In a family of 14, the men eat on average 65 kg
of food and women eat on an average 40 kg of food. The men and women are equal in number. A woman joined the family for dinner and the average consumption became 55. How much did woman eat (in kgs)?Solution
As men and women are equal so , there are 7 women and 7 men so, total consumption will be 65 × 7 = 455 (by men) and 40 × 7 = 280 (by women)
Total consumption = 735 kg
But after including a woman the average consumption for 15 people is given to be 55.
So the total consumption will be 55 × 15 = 825 kg
So, woman’s consumption will be = 825 – 735 = 90 kg
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