A sack of onions weighs 4 kg 500 g and a sack of potatoes weighs 6 kg. Written in the same unit and in simplest form, the ratio of the onion sack to the potato sack is:

The ratio 2 : 3 says: for every 2 of one thing, there are 3 of another. In a fruit basket of 2 apples and 3 oranges, the ratio of apples to oranges is 2 : 3. **Order matters** — the ratio of oranges to apples in the same basket is 3 : 2. The two quantities must be in the same unit (you can't ratio apples to kilograms unless you convert).