we are given
Hao dog ate 40 cans of dog food in 31 days
it means that
[tex]31 days =40 cans[/tex]
Firstly, we will find for 1 day
we can divide both sides by 31
[tex]\frac{31}{31} day=\frac{40}{31} cans[/tex]
[tex]1 day=\frac{40}{31} cans[/tex]
now, we can multiply both sides by 6
[tex]6*1 day=6*\frac{40}{31} cans[/tex]
[tex]6days=7.74194 cans[/tex]
so,
Hao buy to feed his dog for for the next 6 days is 7.74194 cans.......Answer