GMAT Challenge Question

This week’s GMAT challenge from PrepForTests.com is a data sufficiency question.

Work out which of the statements 1 and 2 are required to answer the question.

A car hire firm charges $30 a day plus a x cents for each mile travelled over 30 miles a day. How many cents per mile does the car hire firm charge after the first 30 miles?

  1. The cost of hiring the car for one day in which it travelled 100 miles was $51.
  2. The cost of hiring the car to travel 120 miles in one day was $6 more than hiring the car to travel 100 miles.
  1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
  2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
  3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
  4. EACH statement ALONE is sufficient
  5. Statements (1) and (2) TOGETHER are NOT sufficient

Have a go at answering this and then review your answer.

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