Dave is d years old. Tracy is twice Dave's age. What is Tracy's age, in terms of d ?

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Study for the PSAT 8/9 Math Test. Practice with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Dave is d years old. Tracy is twice Dave's age. What is Tracy's age, in terms of d ?

Explanation:
Twice means two times. If Tracy is twice Dave's age and Dave is d years old, Tracy's age is 2 × d, which is 2d. The other options would represent different relationships (d is equal to Dave, d/2 is half of Dave, and 3d is triple Dave’s age), so 2d is the correct expression for Tracy’s age.

Twice means two times. If Tracy is twice Dave's age and Dave is d years old, Tracy's age is 2 × d, which is 2d. The other options would represent different relationships (d is equal to Dave, d/2 is half of Dave, and 3d is triple Dave’s age), so 2d is the correct expression for Tracy’s age.

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