Answer:
9 tins of cat food feed her 2 cats for 18 days
Explanation:
Sally has 2 cats
food eaten by 1 cat each day =
food eaten by 2 cat each day= tins
sally buys 9 tins of cat food
then
tins required in = 1 day
1 tin required in
i.e 1 tin required in 2 days
9 tin required for = 9Ă—2 = 18 days
hence , 9 tins of cat food feed her 2 cats for 18 days