How many students failed in class 11th I 400 Students passed in class 11th II No of students failed ...........

Quantitative Aptitude (SBI-CL) Data Sufficiency

Directions (): The following questions are accompanied by three statements (I), (II), and (III). You have to determine which statement(s) is/are sufficient /necessary to answer the questions

How many students failed in class 11th ?

I. 400 Students passed in class 11th.

II. No. of students failed in class 11th is 20% of those failed in class 12th.

III. Ratio of student appeared to that of failed in class 11th is 5 : 3.

Only I and III

Only II

Only I and II

All I, II and III

Cannot be obtained even including all three statement

Explanation:

From I
Passed = 400
From III
Let number of appeared & Failed students be 5x and 3x respectively
2x = 400 ⇒ x = 200
∴ failed = appeared – passed
= 1000 – 400
= 600