SSC CGL 2015 : DI QUIZ

Directions(1-5):The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.
Distribution of students at graduate and post-graduate levels in seven institutes:

1. What is the total number of graduate and post-graduate level students is institute R?

A.8320

B.7916

C.9116

D.8099

2.What is the ratio between the number of students studying at post-graduate and graduate levels respectively from institute S?

A.14 : 19

B.19 : 21

C.17 : 21

D.19 : 14

3. How many students of institutes of M and S are studying at graduate level?

A.7516

B.8463

C.9127

D.9404

4. What is the ratio between the number of students studying at post-graduate level from institutes S and the number of students studying at graduate level from institute Q?

A.13 : 19

B.21 : 13

C.13 : 8

D.19 : 13

5. Total number of students studying at post-graduate level from institutes N and P is

A.5601

B.5944

C.6669

D.8372

Directions(6-10):Study the following line graph which gives the number of students who joined and left the school in the beginning of the year for six years from 1996 to 2001.

Initial strength of the school in 1995 was 3000

Answer questions based on the line graph given below.

6. The strength of the school increased from 1997 to 1998 by what percent ?

A.1.7%

B.1.8%

C.1.9%

D.2%

7. The number of students studying in the school during 1999 was :

A.3100

B.3000

C.3150

D.3250

8. During which of the following pairs of years, the strength of the school was same ?

A.1997 and 1998

B.1998 and 2000

C.1999 and 2001

D.1996 and 2000

9. The number of students studying in the school in 1998 was what percent of the number of students studying in the school in 2001 ?

A.90.75%

B.91.75%

C.92.75%

D.93.75%

10. Among the given years the largest number of students joined in which year ?

A.1999

B.2000

C.2001

D.1998


ANSWERS AND SOLUTION:
1(D)Explanation:
Required number = (17% of 27300) + (14% of 24700)
= 4641 + 3458
= 8099.

 2(D)Explanation:
Required ratio =(21% of 24700)/(14% of 27300)=(21 x 24700)/(14 x 27300) =19/14 .

3(B)Explanation:
Students of institute M at graduate level= 17% of 27300 = 4641.
Students of institute S at graduate level = 14% of 27300 = 3822.
Therefore Total number of students at graduate in institutes M and S = (4641 + 3822)
= 8463.

4(D)Explanation:
Required ratio =(21% of 24700)/(13% of 27300)=(21 x 24700)/(13 x 27300) =19/13 .

5(C)Explanation:
Required number = (15% of 24700) + (12% of 24700)
= 3705 + 2964
= 6669.

6(A)Explanation:
Let analyse the graph before answering question.
Number of students in 1995 = 3000 [given]
Number of students in 1996 = 3000-250+350 = 3100
Number of students in 1997 = 3100-450+300 = 2950
Number of students in 1998 = 2950-400+450 = 3000
Number of students in 1999 = 3000-350+500 = 3150
Number of students in 2000 = 3150-450+400 = 3100
Number of students in 2001 = 3100-450+550 = 3200
Above analysis will help us solving problems for this line graph.
Lets be back on question now,
Percentage increase in strength of the school from 1997 to 1998 will be,
((3000-2950)/2950) x 100)% = 1.69%
So this is approx equal to 1.7%

7(C)Explanation:
Number of students in 1995 = 3000 [given]
Number of students in 1996 = 3000-250+350 = 3100
Number of students in 1997 = 3100-450+300 = 2950
Number of students in 1998 = 2950-400+450 = 3000
Number of students in 1999 = 3000-350+500 = 3150

8(D)Explanation:
Number of students in 1995 = 3000 [given]
Number of students in 1996 = 3000-250+350 = 3100
Number of students in 1997 = 3100-450+300 = 2950
Number of students in 1998 = 2950-400+450 = 3000
Number of students in 1999 = 3000-350+500 = 3150
Number of students in 2000 = 3150-450+400 = 3100
Number of students in 2001 = 3100-450+550 = 3200
From from above options we find in 1996 and 2000 number of students was same i.e. 3100

9(D)Explanation:
Number of students in 1995 = 3000 [given]
Number of students in 1996 = 3000-250+350 = 3100
Number of students in 1997 = 3100-450+300 = 2950
Number of students in 1998 = 2950-400+450 = 3000
Number of students in 1999 = 3000-350+500 = 3150
Number of students in 2000 = 3150-450+400 = 3100
Number of students in 2001 = 3100-450+550 = 3200
In 2001 students = 3200
In 1998 students = 3000
Required Percentage =(3000/3200x100)%=93.75%

 10(C)Explanation:
Clearly from the line graph we can judge it was in year 2001.