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In 1936, my age was equal to the last two digits of my birth year. My grandfather said that it was true for him also. Then, the sum of my age and my grandfather’s age in 1936 was ?

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The sum is 86. Solution:

For you:

36-x=x

36=2x

18=x

You are 18 in 1936, born in 1918

Grandpa:

136-x=x

136=2x

x=68

Grandpa is 68 in 1936, born in 1868

68+18=86

Edited by wafflechip
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The sum is 86. Solution:

For you:

36-x=x

36=2x

18=x

You are 18 in 1936, born in 1918

Grandpa:

136-x=x

136=2x

x=68

Grandpa is 68 in 1936, born in 1868

68+18=86

Correct answer but still something is missing

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Correct answer but still something is missing

Is the year significant? 1936 was a leap year, But I don't know how that would fit in. Also, you'd have to assume that both people have already had their birthday in 1936.

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Is the year significant? 1936 was a leap year, But I don't know how that would fit in. Also, you'd have to assume that both people have already had their birthday in 1936.

Actually you have to show that this is the only possible answer.

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