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How are computers 35 years ago and how are they presently and how are they going to be in the next 35 years

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  1. 11 January, 02:55
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    Jason = 20yrs. old

    Mandy = 15yrs. old

    Explanation:

    Let

    J = Jason's age

    M = Mandy's age

    J+M=35 ... eq. 1

    J-10=2 (M-10) ... eq. 2

    From eq. 1

    J=35-M

    Substitute this in eq. 2.

    (35-M) - 10=2 (M-10)

    35-10-M=2M-20

    35-10+20=2M+M

    45=3M

    453 = 3M 3

    15=M

    J=35-M

    J=35-15

    J = 20
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