Latest
Interest
Q. If the ratio of boys to girls in a class is 3:2, and there are 25 students in total, how many girls are there in the class?
A) 10
To find the number of girls, we can use a proportion:
3:2=x:25−x
where x is the number of boys. Cross-multiplying and solving for x, we get
3/2=x/(25-x)
Or, 2x=3(25-x)
Or, 5x=75
Or, x=15
Therefore, there are 15 boys and 25-15 = 10 girls in the class.
B) 12
C) 15
D) 18
Discuss
