Question

The ratio of boys to girls in band is 3:6 if there are 81 students. How many are boys

Answer 1

Answer:

if there are 81student.....and ratio is 3 :6...then add a cofficent with ratio.....like x then add it ....means 3+6=9/81=9.....

now 9multiply by 3=ans. is 27.....

Answer 2

Let the no of boys =3x

Let the no of girls =6x

Total no of students given=81

Question asked :

Total find the no of boys

Sol.

3x+6x=81

9x=81

x=81/9

x=9

No.of girls =6x=6×9=42

No.of boys=3x=3×9=27

Check:

27+54=81

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