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     EduGorilla 
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    Average of the marks scored by boys in a class is 54 and that by girls in the class is 45. If average of the marks scored by all the students in the class is 51, then find the respective ratio of number of boys and girls in the class.

    Options :-

    1. 1 : 2
    2. 2 : 1
    3. 2 : 3
    4. 3 : 2
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