Practice30Create account

How many students passed an examination in a class? Statement I: 40% of the students in the class failed. Statement II: The number of students who passed was 24 more than the number who failed.

Competition practiceData Sufficiency
  • AStatement I alone is sufficient but Statement II alone is not
  • BStatement II alone is sufficient but Statement I alone is not
  • CBoth statements together are needed (neither alone is sufficient)
  • DEither statement alone is sufficient

Step-by-Step Solution

I: 60% passed but the total is unknown. II: passed - failed = 24 with unknown total. Together 60% - 40% = 20% of total = 24, so total = 120 and passed = 72.
Answer: C) Both statements together are needed (neither alone is sufficient)

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Data Sufficiency practice questions

More Data Sufficiency practice

Question: How is Priya related to Rohan? Statement I: Priya is the only daughter of…Question: In which direction is point P from point Q? Statement I: Point P is to the…Question: How many students are there in a row? Statement I: Ravi is 12th from the left…Question: What is Amit's rank from the top in a class of 40 students? Statement I: Amit…Question: How is M related to N? Statement I: M is the brother of O, who is the son of…