Efron is $$30$$ years younger than Danny. The ratio of Danny\textquotesingle s age to Efron\textquotesingle s age now is $$8:3$$. In how many years\textquotesingle{} time will the ratio of Danny\textquotesingle s age to Efron\textquotesingle s age be $$5:3$$? 
Overseas Competition->Knowledge Point->Word Problem Modules->Age Problems->Varying Multiples in Age Problems