Exercise 1 Page 156

There are many different ways to compare amounts or quantities. A ratio is a comparison of two quantities by division. For example, the ratio of a to b can be written in two different ways. a/b or a: bWe want to find two equivalent ratios that describe the given relationship between 3 scooters and 3 bikes. To do so, we can write the fraction that represents desired ratio. We will write the number of scooters in the numerator and the total number of bikes in the denominator. l Scooters→ Bikes→ 3/3 This ratio can be written as 3:3. Since both numerator and denominator are equal to 3, we can simplify them by dividing by 3.

This is an equivalent ratio of 3:3. Then, we can use 3:3 or 1:1 to describe the given relationship. Note that this is only one possible solution, there are more ratios that can describe the given situation.