In the land of Seuss, a plate of green eggs costs twice as much as a plate of ham. If a plate of ham costs $$5$$￠, how much would $$1$$ pay for $$2$$ plates of green eggs and $$3$$ plates of ham? 
Overseas Competition->Knowledge Point->Word Problem Modules->Word Problems in Economics->Complex Money Word Problems
Since a plate of green eggs costs twice as much as a plate of ham, a plate of the eggs costs $$10$$￠. The cost of $$2$$ plates of eggs and $$3$$ plates of ham is $$2\times 10$$￠$$+3\times 5$$￠$$=20$$￠$$+15$$￠$$=35$$￠. 