AlgebraEasyYounger sibling's age
Algebra practice question
Tom is 4 years older than his sister. If Tom is 15, how old is his sister?
Answer: 11
s + 4 = 15 gives s = 11.
Common wrong answers
- If you answered 4
- 4 is the age gap, not the sister's age.
- If you answered 15
- 15 is Tom's age.
- If you answered 19
- 19 adds 4 instead of subtracting.
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