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7 August, 23:31

Solving Multi-Step Inequalities:

A grandmother says her grandson is two years older than her granddaughter and that together, they are at least 12 years old. How old are her grandson and granddaughter?

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  1. 8 August, 02:53
    0
    Because the problem says - they are AT LEAST ...

    You would need to list the answers this way

    GrandD is < or = to 5 GrandS is greater or = to 7

    Step-by-step explanation:

    These are so fun!

    Let GrandD = X

    Let GrandS = X + 2 (because he is two years older than GrandD)

    Their age together is 12 years - so ...

    GrandD + GrandS = 12 OR ...

    x + x + 2 = 12

    Now solve for x.

    2x + 2 = 12

    2x = 10 (because we subtract the ones on the left from the ones on the right)

    x = 5 (because we divide both sides by 2)

    This means that GrandD (x) is equal or greater than 5 years old

    And GrandS (x + 2) = or greater than 7 years old
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