A mother is 3 times as old as her daughter. The sum of their ages is 48. How old is the daughter?
Answer and explanation
Correct answer: C. 12
- Step 1: Let the daughter be ; the mother is , so .
- Step 2: and .
Answer
12.
Why not the others: 36: that is the mother's age. 24: the ages are split equally. 16: the sum is divided by the multiple only.
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