Algebra books cost $$$12.50$$ each, and geometry books cost $$$14$$ each. How much do $$6$$ algebra books and $$5$$ geometry books cost in total? 
Overseas Competition->Knowledge Point->Word Problem Modules->Unitary Method Problems->Finding the Total Value using Unitary Method
Six algebra books cost $$$12.50 \times 6 = $75$$. Five geometry books cost $$$14\times5 = $70$$. All together, they cost a total of $$$145$$. 