The ratio of boys to girls at a college is 4:5. How many boys and are there if the total num of students is girls 3321?
boy count is 1476
There is an important difference between the way counts are viewed in ratio to that in fractions.
The ratio of boys : girls
So to change the ratio proportion into fraction proportion we have:
It is given that the whole is 3321 therefore the count of boys is:
An alternative interpretation of the question.
Proves that my other solution is the correct one.
There is a problem with interpreting the question part:
"the total num of students is girls 3321"
It would make more sense if worded:
My other answer assumes case 1
Using ratio in fraction FORMAT.
Multiply both sides by 3321
You can not have part of a boy. So the other solution where I address Case 1 must be the correct interpreatation