The ratio of boys to girls in the class is 2:3.

The soldiers were given a daily ration of food.

He made a rational decision based on the facts.

The rationale behind this decision is to improve efficiency.

Rationality is the key to making logical decisions.

She took her time to ratiocinate and come up with a logical solution.

Sherlock Holmes is known for his exceptional ratiocination skills.

She approached the problem in a ratiocinative manner.

During World War II, people in the United Kingdom had to use a ration book to purchase limited amounts of food.

A rational number is a number that can be expressed as a fraction.