[tex] \frac{1615}{170} \\ \\ \sf Find \ GCF \\ \\ 1615 : 1, 5, 17, 19, 85, 95, 323, 1615 \\ 170 : 1, 2, 5, 10, 17, 34, 85, 170 \\ \\ \sf GCF = 85 \\ \\ 1615 \div 85 = 19 \\ \\ 170 \div 85 = 2 \\ \\ \frac{19}{2} \\ \\ Answer: \fbox {19/2} \ or \ \fbox {9.5} [/tex]