The average weight of three men A, B and C is 84 kg Another man D joins the group and the average now becomes 80 kg If another man E, whose weight is 3 kg more than that of D, replace A, then the average weight of B, C, D and E becomes 79 kg The weight of A is 1 70 kg 2 72 kg 3 75 kg 4 80 kg 5 78 ...

Solution 3 Let the weight of A be x kg Total weight of A B and C 84 3 2 ...

The average weight of three men A, B and C is 84 kg. Another man D...

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Cambridge International AS And A Level Chemistry Coursebook

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The average weight of three men A, B and C is 84 kg. Another man D...

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Solution 3 Let the weight of A be x kg Total weight of A B and C 84 3 2... View the full answer

Cambridge International AS And A Level Chemistry Coursebook

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