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How younger he is from his counterpart?

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Average age of a 10 members committee is same as it was 4 years ago, because an old member is replaced by a younger member. What is difference between the younger member and the old member age.
Or in other words, how younger he is from his counterpart?

posted Jul 23, 2014 by Nikita Sehgal

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1 Answer

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may be a is the age of old member at first time
b is the age of younger one afer 4 year

so (a+x)/10 = (b+x+36)/10
now its gives result
though it was the younger ones present age so difference will be 36-4=32

answer Jul 23, 2014 by Jogendra Sahoo

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Dhanush is now two fifth of his older brother's age and two years from now he will be half of his older brother's age.
Two years ago, Dhanush was only one-fourth the age of his older brother age at that time.

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The average age of a 10-members committee is the same as it was 4 years ago, because an old member has been replaced by a young member.

How many years younger was the new member than the old member he replaced?

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