AlgebraEasyAge from a sibling's age
Algebra practice question
Sam is x years old, and his sister is 3 years older than Sam. If his sister is 14 years old, what is the value of x?
Answer: 11
x + 3 = 14, so x = 11.
Common wrong answers
- If you answered 3
- 3 is the difference, not Sam's age.
- If you answered 14
- 14 is the sister's age.
- If you answered 17
- 17 adds 3 instead of subtracting.
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