​Seven Hundred Gallons of 89-Octane Gasoline Is Obtained by Mixing $$\left\{ \begin{array} { c } x + y = 700 \\87 x + 92 y = 62300\end{array} \right.$$

Multiple Choice

​Seven hundred gallons of 89-octane gasoline is obtained by mixing 87-octane gasoline with 92-octane gasoline.How much of each type of gasoline is required to obtain the 700 gallons of 89-octane gasoline? Use this system of linear equations there x and y represent the number of gallons of the 87-octane gasoline and 89-octane gasoline. ​​ $$\left\{ \begin{array} { c } x + y = 700 \\87 x + 92 y = 62300\end{array} \right.$$ ​

A) 87​-octane: 89 gal;92-octane: 280 gal ​
B) 87​-octane: 280 gal;92-octane: 420 gal​
C) 92​​-octane: 89 gal;87-octane: 280 gal
D) ​​87-octane: 420 gal;92-octane: 280 gal
E) ​​92-octane: 280 gal;87-octane: 89 gal