$1-1.$ Tried and True Clothing has opened four new stores in col$-$

$1-4.$

lege towns across the state. Data on monthly sales volume and labor hours are given below. Which store location has the highest labor productivity?

$\backslash$table$[[$Store$,$Annandale,Blacksburg,Charlottesville,Danville$],[$Sales volume,$$40,000,$$$12,000,$$$60,000,$$$25,000$