Revealing mistakes: When Ariel is doing her practice test for the PSAT, question #44 reads: "A father is three times as old as his son. After fifteen years, the father will be twice as old as his son's age at that time. Therefore, the father's current age is?" Although the correct answer is 45, the five choices given are: "A)4 B)8 C)16 D)32 E)64"
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