Question : The following bar graph shows the percentage of students from five different colleges who are selected for a maths quiz. The ratio of the number of students in colleges P, Q, R, S, and T is 2 : 4 : 3 : 1 : 3, respectively. If 25 students are selected from college P, then what is the total number of students selected for the quiz?
Option 1: 172
Option 2: 180
Option 3: 240
Option 4: 210
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Correct Answer: 240
Solution : Given: The ratio of the number of students in colleges P, Q, R, S, and T is 2 : 4 : 3 : 1 : 3, respectively. There are 25 selected students from college P. The number of college students selected from college P = 5% = 25 So, 100% = 500 The total number of college students from college P = 500 The total number of college students in college P = $\frac{500}{2}\times 4$ = 1000 The total number of college students in college Q = $\frac{500}{2}\times 3$ = 750 The total number of college students in college R = $\frac{500}{2}\times 1$ = 250 The total number of college students in college S = $\frac{500}{2}\times 3$ = 750 The total number of students selected for the quiz = 5% of 500 + 6% of 1000 + 10% of 750 + 8% of 250 + 8% of 750 = 25 + 60 + 75 + 20 + 60 = 240 students Hence, the correct answer is 240.
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Question : The following bar graph shows the number of students in five different coaching centers. In how many coaching centers the number of students is more than the average number of students in these centers?
Option 1: 2
Option 2: 3
Option 3: 1
Option 4: 4
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Option 1: 25%
Option 2: 65%
Option 3: 60%
Option 4: 55%
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Option 1: 900
Option 2: 940
Option 3: 860
Option 4: 760
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Option 1: 485
Option 2: 890
Option 3: 1240
Option 4: 1375
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Option 1: 40%
Option 2: 50%
Option 3: 30%
Option 4: 60%
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