Answer:
Both statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
Step-by-step explanation:
Consider the provided information.
Sixteen year-olds at Culliver High School have to pass both a written and a practical driving test.
Everyone has to take the tests, and no one failed both tests.
30% of the 16 year-olds who passed the written test did not pass the practical,
Statement 1: There are 188 sixteen year-olds at Culliver High School.
That means 30% of 188 passed in written test.
Or 70% of 188 sixteen year old passed in one or both test.
But we need to find the number of sixteen year-olds at Culliver High School received their driver license?
Which is not possible,
Thus, the statement is insufficient.
Statement 2: 20% of the sixteen year-olds who passed the practical test failed the written test.
That means 20% passed in practical test only and we know that 30% of sixteen year-olds passed in written test.
Therefore, 50% of total passed in both.
But this tells us the percentage of student passed in both and we wants a definite number,
Thus, the statement is not sufficient alone.
Therefore, Both statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
