In Linguistics 101, the ratio of the number of girls to the number of boys is $3:2$. When seven more girls join the class, and t

Question

2 years ago

11

wo boys drop the class, the ratio of the number of girls to the number of boys becomes $5:2$. How many students are in the class after these changes?

2 answers:

never [62] · Answer 1 · 2022-08-07T23:20:37+03:00

never [62]2 years ago

7 0

Answer:

Step-by-step explanation:3.26*3.25- -5

muminat · Answer 2 · 2022-08-08T00:59:55+03:00

Answer:

There are 25 students in the class after the changes

Step-by-step explanation

Let G= The total number of girls after the change

Let B= The total number of boys after the change

g/b=3/2

G+7/B-2=5/2

After cross multiplying you get 5B-10=2B+14

and 3B=2B

Then you solve to get B=12. Then plug B back in any equation to get G=18.

Then plug your to number back in G+7/B-2=5/2 to get 18+7 and 12-2. Once you solve and add you get 25 students.