Three people $$A$$, $$B$$, and $$C$$ have a total of £$$200$$. Given that the ratio of $${A}'$$ s total to $${B}'$$s total is $$4:3$$, and $$A$$ has £$$20$$ more than $$C$$, how much does $$C$$ have? 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Proportions->Dividing Quantities Based on Ratio