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Tyra mows lawns at a constant rate. She can mow 3 lawns in 2 hours. Ming also mows lawns at a constant rate. How much less time would it take Tyra and Ming working together to mow 3 lawns?

(1) Both Tyra and Ming mow lawns at the same rate.

(2) It takes Tyra twice as long to mow a lawn as it takes Tyra and Ming working together to mow a lawn.

  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are not sufficient.
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正确答案: D

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