Ans.number of boys : number of girls = 4 : 5.e mean marks of 150 stude – InterviewSolution

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1.	Ans.number of boys : number of girls = 4 : 5.e mean marks of 150 students in an examination was 60. The mean marks of boysrls was 55. Find the number of boys and number of girls inènce,15. Thfound to be 70 and that of the githe class.ils heno then
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