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Data Analysis (Part-5) For SBI PO

Published on Tuesday, June 28, 2016

Study the following information to answer the question :

In an institute having 1500 students boys and girls are in the ratio of 2 : 3 respectively.Students are attending one or more hobby classes out of A , B and C. Out of the boys, 18% are attending only A classes, 16% are attending only B classes and 14% are attending only C classes, 12% of the boys are
attending only A and B classes, 15% are attending only B and C classes, 14% are attending only A and C classes and remaining boys are attending all three classes. Out of the girls 17% are attending only A classes, 16% are attending only B classes and 13% are attending only C classes, 15% of the girls are attending only A and B classes, 18% are attending only B and C classes, 12% are attending only A and C classes and remaining girls are attending all three classes.

1.What is the difference between number of boys attending only one of the three hobby classes and the number of girls attending only one of the three hobby classes ?
1.116
2.126
3.118
4.132
5.120

2. How many boys are attending at least two hobby classes ?
1.308
2.320
3.336
4.312
5.306

3. What percent of the students do not attend C classes ?
1.44.9
2.42.9
3.48.6
4.44.6
5.47.2

4. Number of boys attending all three hobby classes is approximately what percent of the number of girls attending all three hobby classes ?
1.87
2.72
3.89
4.76
5.81

5.. What is the number of boys attending B classes ?
1.329
2.324
3.369
4.352
5.365

Solution And Answers:

Boys :

only A classes = 18*6=108
only B classes = 16*6 = 96
only C classes = 14*6 = 84
only A and B classes = 12*6= 72
only B and C classes = 15*6 =90
only A and C classes = 14*6 = 84
attending all three classes = 66

Girls :

only A classes = 17*9=153
only B classes = 16*9 = 144
only C classes = 13*9 = 117
only A and B classes = 15*9= 135
only B and C classes = 18*9 =162
only A and C classes = 12*9 = 108
attending all three classes = 81

Answers :

1.2
2.4
3.5
4.5
5.2

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