Step-by-step explanation:
let's assume one month is 30 days you would multiply 10 by 30.
[tex]10 \times 30 = 300[/tex]
which would be 300 hours in 1 month
now if one month is 31 days you would simply multiply 10 by 31.
[tex]10 \times 31 = 310[/tex]
which would be 310 hours
