Box $$A$$ contains four times as many coins as Box $$B$$. $$6 \%$$ of the coins in Box $$A$$ are removed and transferred to Box $$C$$. $$20 \%$$ of the coins in Box $$B$$ are removed and tranferred to Box $$C$$. There are now $$1220$$ coins in Box $$C$$ , which is $$22 \%$$ more than the original mumber of coins in Box $$C$$. How many coins were there in box $$A$$ at the beginning? 
Overseas Competition->Knowledge Point->Word Problem Modules->Equation Word Problems->Multivariate Linear Equation Word Problems