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GATE | GATE CS 2021 | Set 1 | Question 1

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The ratio of boys to girls in a class is 7 to 3. Among the options below, an acceptable value for the total number of students in the class is: (A) 21 (B) 37 (C) 50 (D) 73

Answer: (C)

Explanation: Given, Ratio of boys to girls = 7 : 3 So, ratio of boys in the class = 7 / 10 = should be integer And, ratio of girls in the class = 3 / 10 = should be integer Hence, from given option, only 50 satisfies = 35 : 15 = 7 : 3 Alternative Method : Sum = 3+7 = 10k So, total number of students should be multiple of 10.

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Last Updated : 24 May, 2021
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