Question
In a family of 8, the men eat on average 50 kg of
food and women eat on an average 25 kg of food. The men and women are equal in number. A woman joined the family for dinner and the average consumption became 40. How much did woman eat (in kgs)?Solution
As men and women are equal so , there are 4 women and 4 men so, total consumption will be 50 × 4 = 200 (by men) and 25 × 4 = 100 (by women)
Total consumption = 300 kg
But after including a woman the average consumption for 9 people is given to be 40.
So the total consumption will be 40 × 9 = 360 kg
So, woman’s consumption will be = 360 – 300 = 60 kg
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- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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