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.
retype the first sentence, it makes no sense and must contain a typo ....
probably "4 more girls" or "4 less girls"
sorry. it's 4 more girls
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
so Mr B had 7, Mrs C had 11
(Wow! 7 students and 11 students, where do these schools exist ???? I might go back to teaching)
thank you.
To solve this problem, let's break it down step by step.
1. Let's start with the information that is given. It says that there are 4 girls in Mrs. Chang's class than in Mr. Blackwell's class. This means that the number of girls in Mrs. Chang's class is 4 more than the number of girls in Mr. Blackwell's class.
2. Next, it says that 5 girls moved from Mrs. Chang's class to Mr. Blackwell's class. This means that the number of girls in Mr. Blackwell's class increased by 5.
3. Finally, it states that now there are twice as many girls in Mr. Blackwell's class as there are in Mrs. Chang's class. This means that the number of girls in Mr. Blackwell's class is now 2 times the number of girls in Mrs. Chang's class.
To find the number of girls in Mr. Blackwell's class at the beginning, we need to solve these given conditions.
Let's assume the number of girls in Mr. Blackwell's class before the girls moved is "x."
According to the first condition, the number of girls in Mrs. Chang's class is 4 more than x, which is x + 4.
After the girls moved, the number of girls in Mr. Blackwell's class increased by 5, so it becomes x + 5.
Lastly, according to the last condition, the number of girls in Mr. Blackwell's class is twice the number of girls in Mrs. Chang's class, which means (x + 5) = 2(x + 4).
Now we can solve this equation to find the value of x.
Expanding the equation, we get x + 5 = 2x + 8.
Next, we can simplify the equation by subtracting x from both sides, which gives us 5 = x + 8.
Then, we subtract 8 from both sides, and we have -3 = x.
Therefore, the number of girls in Mr. Blackwell's class at the beginning (before the girls moved) is -3.
But since it doesn't make sense to have a negative number of girls, we can conclude that there might be an error in the given information or problem statement. Double-check the problem statement or consult with your teacher for clarification.