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Answer the questions given below based on the following data:A total of 250 students of a class play different games viz. Football, Hockey, Chess, Badminton, Table Tennis and Tennis. The ratio of girls to boys in the class of 250 is 13 : 12 respectively.

Answer the questions given below based on the following data:

A total of 250 students of a class play different games viz. Football, Hockey, Chess, Badminton, Table Tennis and Tennis. The ratio of girls to boys in the class of 250 is 13 : 12 respectively. 50% of the girls play Table Tennis and Badminton only. 20% of the boys play Football, Hockey and Tennis only. 15% of the boys play Tennis and Chess only. The ratio of number of girls to boys playing Tennis and Chess only is 2 : 3 respectively. 30% of the girls play Hockey and Chess only. 10% of the girls play Chess, Badminton and Table Tennis only. The remaining girls play only Football. Boys playing Table Tennis and Badminton only is 20% of the girls playing the same. 40% of the boys play only Football. The remaining boys play only Chess.


What is the total number of students playing Football?
1). 72
2). 64
3). 68
4). 73

This Question has 1 answers.

Solution

Total = 250 students

Number of girls = $\frac{13}{13 + 12} \times 250 = 130$

Number of boys = $250 - 130 = 120$

Girls playing only table tennis and badminton = $\frac{50}{100} \times 130 = 65$

Girls playing hockey and chess only = $\frac{30}{100} \times 130 = 39$

Girls playing chess, badminton and table tennis only = $\frac{10}{100} \times 130 = 13$

Girls playing tennis and chess only = $\frac{18}{3} \times 2 = 12$

Girls playing football only = $130 - (65 + 39 + 13 + 12) = 1$

Boys playing football, hockey and tennis only = $\frac{20}{100} \times 120 = 24$

Boys playing tennis and chess only = $\frac{15}{100} \times 120 = 18$

Boys playing table tennis and badminton = $\frac{20}{100} \times 65 = 13$

Boys playing only football = $\frac{40}{100} \times 120 = 48$

Boys playing only chess = $120 - (24 + 18 + 13 + 48) = 17$

$\therefore$ Total number of students playing football = 48 + 24 + 1

= 73

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