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Ratio & Rate problems

A vet gives 5mL of a medicine for every 10 pounds a dog weighs.
How many milliliters should the vet give a 55 pound dog?

Kim buys a bag of chips with 20 ounces. Each serving is 4 ounces. The label says each serving has 125 calories. How many calories are in the bag?

A 12–ounce milkshake has 225 calories. How many calories are in a 20–ounce milkshake?

A cake has sixteen servings and the label says each serving has 225 calories. How many calories are in a half serving?

In the same situation (copied below), how many calories are in the whole cake?
(Situation: A cake has sixteen servings and the label says each serving has 225 calories.)

An 8–ounce serving of soda has 120 calories.
How many calories are in a two–liter bottle? (There are 33.814 ounces in a liter.)