It takes 5 dogs 6 days to eat 90 cups of food. How many days will it take 8 similar sized dogs to eat 150 cups of food? A) 2.5 days B) 4.8 days C) 5.5 days D) 6.25 days

The answer to you question is d.

So if it takes 5 dogs 6days to eat 90 cups of food, then we can conclude that it takes 1 dog 6 days to eat 18 cups of food (90/5). From here we can say that it will take 1 dog 1 day to eat 3 cups of food (18/6).

Now it says we have 8 similar sized dogs, so we can conclude that it will take 8 dogs 1 day to eat 24 cups of food (3 x 8). Now we need to find how many days it'll take to eat 150 cups, so we just do a simple division to find it:

150/24 = 6.25

So your answer is 6.25 days, D