sally has 2 cata and each cat eats 1/4 of a tin of cat food each day. Sally buys 9 tins of cat food. For how many days will the cat food feed her 2 cats?
18 days; as a collective the cats eat half a can a day so multiply the number of runs she got by 2 because it takes two days to finish a tin and you get your answer (9 x 2 = 18)
If each can is divided into 1/4s, and you know that each day half of it is consumed, you can count each half of a single can as one day. So multiply 2 by total number of cans and you get 18 days:
