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Spencer is 10 years old. His age is two years less than three times his sister’s age. How old is Spencer Sister?

User KyluAce
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Answer: His sister is 4.

Explanation:

We have to work backwards for this. First, add 2 to 10 to get 12, since we need to do that to divide by 3, since we multiplied by three.

User Stobor
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