Sally has 2 cats and each cat eats of a tin of cats food each day. Sally buys 9 tins of cat food.
For how many days with the cat food feed her 2 cats?
You must show your working

18

Each cat eats 1/4 of a tin in a day, since there’s 2 cats:
They eat 1/4+1/4= 2/4 =1/2 of the tin one day.

Sally has 9 tins of cat food, and x represents the quantity of days. We must multiply and divide the remaining amount:
x = 2 × 9/1 = 18

The 9 tin of cat food will last 18 days

Hope this helps again (ᵔᴥᵔ)