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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?







Respuesta :

Answer:

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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