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[" An a class,the average marks of boys ...

[" An a class,the average marks of boys is "520" and that "],[" of the girls is "420." If the average marks per student "],[" is "500," then the percentage of boys in the class is "],[qquad -]

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In a class, the average marks of boys is 520 and that of the girls is 420. If the average marks per student is 500, the percentage of boys in the class is …….

The average marks of boys in a class is 52 and that of girls is 42. .The average marks of boys and girls combined is 50 . The percentage of boys in the class is

The average marks of boys in a class is 52 and that of girls is 42. The average marks of boys and girls combined is 50. The percentage of boys in the class is :

The average marks of boys in a class is 52 and that of girls is 42. The average marks of boys and girls combined is 50. The percentage of boys in the class is (1) 40 (2) 20 (3) 80 (4) 60

The average marks of boys in a class is 52 and that of girls is 42. The average marks of boys and girls combined is 50. The percentage of boys in the class is (1) 40 (2) 20 (3) 80 (4) 60