Ray feeds his dog 0.12 kilograms of dry dog food each day. He wants to buy the smallest bag that has enough for one month(31).Should he buy the bag that has 1.8 kilograms,2.4 kilograms, or 4.2 kilograms

The 4.2 kilograms bag

Step-by-step explanation: First of all, the average month has 30 days, so we want to make sure that Paige can feed her dog for at least a month, or 30 days.

First, multiply the amount Paige will feed her dog per day, 0.12 kilograms by 30 to see the total amount of kilograms she will need to feed her dog.

0.12 x 30 = 3.6 kilograms. So, Paige will need 3.6 kilograms to feed her dog for a month.

So, Paige will need to buy at least the 4.2 kilogram bag in order to feed her dog for a month because the other two bags don't have enough food. Paige will even have some food left over for a couple of extra days.