Total time = 10/10
So time left = 10/10 - 2/10 - 7/10
= 10/10 - 9/10
= 1/10 (answer)
The total fraction of time is:
10/10
The fraction of time which has already been used is:
2/10 + 7/10 = 9/10
The fraction of time to be used is:
10/10 - 9/10 = 1/10
Hope it helped,
BioTeacher101
