Solving Problems Involving Direct, Inverse and Partitive

This is the comparison between two numbers or measurements.

What do you call an equation that states that two ratios are equal?

Four machines can recopy 25000 modules in 6 days. How many machines are needed to copy 25000 modules in 3 days?

The ratio of the three sides of a triangle is 1:2:3. What are the measurements of each side if the perimeter of the triangle is 120cm?

The fuel consumption of a car is 15 liters of diesel per 100km. What distance can the car cover with 5 liters of diesel?

Identify the kind of proportion: When one value increases, the other decreases.

Identify the kind of proportion: when one value increases, so does the other.

Identify the kind of proportion: identifying parts of a whole based on a given ratio of these parts.