Question

12 hours 15 minutes_ 9 hours 4 5 minutes

Answer 1

which type of question is this

Answer 2

12 hours = 720 minutes
so 12 hours 15 minutes
= 720+15
=735

now ,
9 hours= 540 minutes
so 9 hours 45 minutes
= 540+45
=585

now simply subtract them both
735-585
=150 minutes