In a class average age of boys is 15 yrs and that of girls is 16 yrs. The total average being 15.6 yrs. Find the ratio of boys to girls

3:2

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ajay1472

  • Nov 22nd, 2007
 

Suppose that no of boys is x and girls y.
total average should
15.6(given)=x*15+16*y/(x+y)

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