Answer:
The answer to your question is 25 girls
Explanation:
Data
4 boys for every 5 girls
20 boys ? number of girls
To solve this problem use proportions
Number of boys : Number of girls :: New number of boys : New number of
girls
Substitution
4 : 5 :: 20 : x
Solve for x
x = (5 x 20) / 4
Simplification
x = 100 / 4
Result
x = 25
There are 25 girls