The scores obtained by Chi Wing, Wai Ping and Wah Ming were ALL even numbers.
Wai Ping's score was greater than 6, but did not get all that was possible.
Chi Wing, scored less than 4.
Nobody scored the same.
Mai Ling's score was half of Wah Ming's.
Granma T and Mai Ling's scores were both odd.
Wah Ming scored three times as much as Chi Wing.
Granma T's score was the sum of Chi Wing and Mai Ling.