Answer:
3.60 hours.
Step-by-step explanation:
It has been given that you work 1.75 hours in your math homework. Your science homework takes 1.05 hours less than your math homework.
[tex]\text{Time spent on science homework}=\text{Time spent on Math homework}-1.05[/tex]
[tex]\text{Time spent on science homework}=1.75-1.05[/tex]
[tex]\text{Time spent on science homework}=0.70[/tex]
[tex]\text{Total time spent on homework}=1.75+1.15+0.70[/tex]
[tex]\text{Total time spent on homework}=3.60[/tex]
Therefore, you spent 3.60 hours on your homework.