I gotchu !! just give me a moment to write it out
I'm only answering because the app told me i need to help someone before I can ask another question, but I can't help because I don't know what to help you with so
ANSWER: B = 10/C
You have to isolate the variable by dividing each side by factors that don’t contain the variable
He started off with 99$
if u take the reciprocal of each fraction
22(3/2) = 33
then 33(3/1) = 99
as a check 99(2/3) is 66 and 66(1/3) = 22 which is what he is left with