Question

Having Dog ate 40 can of dog food in 31 days. how many can should he buy for six Days?

Answer 1

For 31 days, he needs 40 cans of dog food.

$\begin{gathered} 31\text{ days}=40\text{ cans} \\ 1\text{ day}=\frac{40}{31}\text{ cans} \\ 6\text{ days}=\frac{40}{31}\times6 \\ =7.74\text{ cans} \end{gathered}$

Thus, he should buy 8 cans for 6 days.