**Direction:** Read the following information carefully and answer the following questions.

Statement I- There are 3 groups of students X, Y and Z and they study in different classes A, B and C. Number of students in class A is 120.

Statement II- Number of students in class C is 80% of total number of students in class A and class B. Number of group X students in class A is 1/3rd of total number of students in class A. Total number of group X and group Y students in class B is 40.

Statement III- Ratio of group Y and group Z students in class A is 3 : 1. Ratio of group X and group Y students in class B is 3 : 1. Total number of students in class B is 250% of total number of students of group X and group Y in class B.

Statement IV- Ratio of group X, group Y and group Z students in class C is 3 : 5 : 3

This question was previously asked in

SBI Clerk Prelims: 10 July 2021 Shift 1 - Memory Based Paper

Option 4 : 1 : 2

Calculation:

Number of students in group X in class B = 30

Number of students in a group Z in class B = 60

The required ratio = 30 : 60 ⇒ 1 : 2

**∴ The ratio between group X and group Z students in class B is 1 : 2**