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SSC CHSL Model Paper 3

DIRECTIONS (Qs. 46-48): Study the following table carefully and answer the questions given below.

Percentage distribution of students in various disciplines in five different colleges

Discipline → Colleges ↓	Arts	Commerce	Science	Total number of students
A	25	35	40	17500
B	15	45	40	25000
C	15	30	55	35300
D	28	48	24	23000
E	29	30	41	32400

Question : 48 of 100

Marks: +1, -0

What is the difference between the total number of students from the discipline of Arts from all the colleges together and the total number of students from the discipline of Science from all the colleges together?

22874
23863
22963
25963

Validate

Solution:

To calculate faster, instead of finding all the students of Arts and Science stream first and then subtracting, let’s assume that in each college Science students are more and keep substracting the number of Arts students from the number of Science studentscollegewise.

Difference = (40% of 17500 - 25% of 17500) + (40% of 25000 -15 % of 25000) + (55% of 35300 - 15% of 35300) + (24% of 23000 - 28% of 23000) + (41% of 32400 - 29% of 32400)

= (15 \times 175)+(25 \times 250)+ (40 \times 3 53 )

+ (-4 \times 230)+ (12\times 324)

= 2625 + 6250+ 14120-920 + 3888

= 25963

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