Anna is three times as old as Bo. In 12 years Anna will be twice as old as Bo. How old is Bo now?
Answer and explanation
Correct answer: A. 12 years old
- Step 1: Let Bo be now. Anna is . In 12 years: . Step 2. Solve: , so . Answer: 12 years. Why not the others: Check: Anna is 36, in 12 years 48 = 2 x 24. The other guesses fail this check.
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