xzilencoliver xzilencoliver

28-08-2020
Mathematics

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Three siblings are one year apart inage. If the oldest is x years old, what is the average of their ages?

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luisecubero77 luisecubero77

30-08-2020

Answer:

x - 1

Step-by-step explanation:

x

x - 1

x - 2

x + (x - 1) + ( x - 2)

3x - 3

3(x - 1)

Average

3(x - 1)/3

x - 1

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