It’s 17 to 10 (Official clock system).

09:43

It’s 17 to 10.

Correct answer

09:44

It’s 16 to 10.

Error: 1 minute later

08:49

It’s 11 to 9.

Error: read minutes starting from hour markings and adding minutes

09:45

It’s a quarter to 10.

Error: confuse hour and minute hands