Question

Ms. Quinones put 25% of the class in group A, and 75% of the class in group B. How many students are in group B ifthere are 13 students in group A? Draw a diagram to help you.

Answer 1

We know that

• There are 13 students in group A.

,

• 25% of the class is in group A.

,

• 75% of the class is in group B.

Based on the given information, 13 students represent 25% of the class, which is group A. To find the numbers of students in group B, we can form the following proportion.

`(13)/(0.25)=(x)/(0.75)`

Then, we solve for x.

`\begin{gathered} x=(13\cdot0.75)/(0.25) \\ x=39 \end{gathered}`

Hence, there are 39 students in group B.