Question

Jim is twice as old as his sister. If s isthe sister's age, what is the sum of their ages?

Answer 1

Answer:

3s

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Step-by-step explanation:

Answer 2

Answer:

3s

Step-by-step explanation:

Given:

Jim is twice as old as his sister.

His sister's age is signified by the variable s.

∴ Jim's age is 2s.

You are trying to find the sum of both their ages, or add them together:

2s + s

Simplify. Combine like terms:

2s + s = 3s

3s is the expression you will use to find the sum of their ages.