SOLUTION: Tom’s weight is 1/7th of his grandfather and 1/4th of his mother. What fraction is Tom’s mother’s weight of his grandfather?

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Question 1018962: Tom’s weight is 1/7th of his grandfather and 1/4th of his mother.
What fraction is Tom’s mother’s weight of his grandfather?

Answer by ikleyn(52788) About Me  (Show Source):
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Tom’s weight is 1/7th of his grandfather and 1/4th of his mother.
What fraction is Tom’s mother’s weight of his grandfather?
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You have these two equations


T = G%2F7 and T = M%2F4,


where T is Tom's weight, G is grandfather's weight and M is mother's weight.

Hence, G%2F7 = M%2F4,

which implies M = %284G%29%2F7.

Answer. Mother's weight is 4%2F7 of grandfather's weight.