7/ 10=7/ 10

8/ 13=8/ 13

Then find the least common multiple of 4, 10 and 13, which is 260.

Then 260 is divided by 4 to get 65, so 3*65= 195, and Zhang Lin is 195/260.

Divide 260 by 10 to get 26, so 7*26= 182, and Li Qiang is 182/260.

Divide 260 by 13 to get 20, so 8*20= 160, and Zhao Dong is 160/260.

Above ∴,195 > 182 > 160, Zhang Lin scored the best.

(/is the fractional line)