The ratio of girls to boys is 27 girls to 21 boys.
If there are 9 girls, how many boys are there?
27/9=3
21/3=7
Simple. If there are 9 girls, there are 7 boys.
This usually works for all of these types of problems. You just have to find the number that divides into both of the numbers you have, and then check your work.
The ratio of girls to boys is 27 girls to 21 boys.
If there are 9 girls, how many boys are there?
4 answers
21/27 = b/9
Solve for b.
Solve for b.
thats a lot of math like fr lmao
Poorly designed question.
Ratios should be given in lowest terms
so the ratio of
girls : boys
= 27 : 21
= 9 : 7
but we are told there are 9 girls, so it is intuitively obvious that
there must be 7 boys
which is illustrated by PsyDAG's solution of
21/27 = b/9
27b = 189
b = 189/27 = 7
Ratios should be given in lowest terms
so the ratio of
girls : boys
= 27 : 21
= 9 : 7
but we are told there are 9 girls, so it is intuitively obvious that
there must be 7 boys
which is illustrated by PsyDAG's solution of
21/27 = b/9
27b = 189
b = 189/27 = 7
3 answers