GMAT Data Sufficiency
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Source: Knewton
Level: 3
On a certain field trip, the ratio of teachers to students was 3 : 7. What was the number of parents on the field trip?
1. On the field trip, the ratio of the number of students to parents was 5:1.
2. The number of parents on the trip was less than 20.
- A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- C BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- D EACH statement ALONE is sufficient.
- E Statements (1) and (2) TOGETHER are NOT sufficient.