Question

The avg age of a class is 14.6 years .the avg age of boysin the class is 12.4years and that of girls is 16.2years .find the ratio of number of boysto the number of girls in the class

Answer 1

hope this is correct

Answer 2

Answer:

8:11

Step-by-step explanation:

No. of boys =m,→ average of boys →x=12.4

No. of girls =n→ average girls →y=16.2

mx+nym+n=14.6

12.4m+16.2n=14.6m+14.6n

2.2m=1.6n

mn=1622=811

m:n=8:11