outer iron
Simple translation:
The diagram shows which class had how many students before all students from class C moved to class A and class B with unknown amounts of how many to which. After it. The ratio of B to A (B/A) is equal to 4/3. How many students moved to class B from class C?
I first calculated the total amount of students
then said there are no more left students in the C class
and multiplied the ratio with "k" on both
which would give me 4k+3k = 56
7k = 56, k = 8
I placed 8 to "k"
then found the latest number of how many students in each two class
it wants me to find How many moved to B
B was 23 at the first time but then became 32
32 - 23 = 9