# math

posted by .

there are 4 girls in Mrs. Changs class than Mr. Blackwell's.

5 girls moved from Mrs. Changs to Mr. Blackwells.

Now there are twice as many girls in Mr. Blackwells class as there are in Mrs. Changs, How many girls were in Mr. Blackwells class to begin with?

Help, stuck with this problem.

• math -

retype the first sentence, it makes no sense and must contain a typo ....

probably "4 more girls" or "4 less girls"

• math -

sorry. it's 4 more girls

• math -

make a chart:
Now....
Mr Blackwell --- x students
Mrs Chang ---- x+4

after move:
Mr. B ---- x+5
Mrs. C ---- x-1

x+5 = 2(x-1)
x+5 = 2x - 2
x = 7

(Wow! 7 students and 11 students, where do these schools exist ???? I might go back to teaching)

• math -

thank you.

## Similar Questions

1. ### Math

Mrs.Smith's class has 12 girls and 8 boys. What percent of he class are girls?
2. ### math

mrs. cooper's class has 11 more girls than boys. there are 35 students in all. how many girls are there?
3. ### math

Math word problem: There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class.

There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class?
5. ### Math

There are 4 more girls in Mrs. Chang's class than Mr. Blackwell's class. Five girls moves from Mr. Chang's class to Mr. Blackwell's class. Now there are twice as many girls in Mr. Blackwell's class as there are in Mrs. Chang's. How …
6. ### 8thMath

In mrs Wilsons class there are 24 boys and the girls are 2/5 the class ... How many girls are in mrs Wilson class
7. ### Math

Mrs coopers 5th grade class has 11 more girls than boys. There are 35 students in all. How many girls are there?
8. ### P6 maths

Mrs Wong baked some pizzas for her students. The boy received twice as many pizzas as the girls. There were as many girls as boys in the class. Each girl ate 4/9 of a pizza and they finished all pizzas that were given to them. Each …
9. ### Math 1350

Mrs. Smith's classroom can hold at the most 30 students. Her first period class had 4 boys for every 3 girls. When 3 boys and 1 girl were added to the class, the new ratio became 3 boys to 2 girls. How many total students are now in …
10. ### algebra

mrs. rays class has 18 girls and 9 boys. mr lis class has 16 girls and 8 boys. is the girl- boy ratio the same in each class. explain

More Similar Questions