Question

In the city of Toyama, 16 meters of snow fell in 80 days. At this rate, how much snow would fall in 20 days?

Answer 1

`\begin{array}{ccll} \stackrel{ snow }{meters}&days\\ \cline{1-2} 16 & 80\\ m& 20 \end{array} \implies \cfrac{16}{m}~~=~~\cfrac{80}{20} \\\\\\ \cfrac{16}{m} ~~=~~ 4\implies 16=4m\implies \cfrac{16}{4}=m\implies 4=m`