Exercise 3 Page 185

We want to complete a table. We can use the portion where both values are known to find the missing values.

We know that we use 0.4 gallons in 0.75 days. Let's write this as a ratio. 0.4gallons/0.75days or 0.4/0.75We will use this rate to find the missing values.

First Value

We can find an equivalent ratio with a numerator of 1.2 to find in how many days we use 1.2 gallons.

We use 1.2 gallons in 2.25 days.

Second Value

Now, we can find an equivalent ratio with a numerator of 1.6 to find in how many days we use 1.6 gallons.

We use 1.6 gallons in 3 days.

The equivalent ratios are 0.4:0.75, 1.2:2.25, and 1.6:3.