21. Write the ratio given as a simplified ratio.

If you drive 225 miles on 12 ½ gallons of gas, what is the simplified ratio of miles to gallons?
to 1

225/12.5 = x/1

12.5x = 225

x = 18

18 miles per gallon

12:24

To find the simplified ratio of miles to gallons, divide the number of miles by the number of gallons:

225 miles ÷ 12.5 gallons

The simplified ratio is:

18 miles ÷ 1 gallon

Therefore, the simplified ratio of miles to gallons is 18:1.

To find the simplified ratio of miles to gallons, we need to divide the number of miles by the number of gallons.

Given:
Miles: 225
Gallons: 12 ½

To convert the 12 ½ gallons to a fractional form, we note that ½ is equivalent to 1/2. So we have 12 ½ = 12 + 1/2 = 24/2 + 1/2 = 25/2.

Now, let's divide the number of miles by the number of gallons:

225 / (25/2)

To divide by a fraction, we multiply by its reciprocal. The reciprocal of 25/2 is 2/25.

225 * (2/25)

Simplifying the expression further:

225 * 2 = 450
25 * 1 = 25

So the simplified ratio of miles to gallons is 450 to 25, or 450/25.
However, we can simplify this fraction further by dividing both the numerator and denominator by their greatest common divisor, which is 25:

450 ÷ 25 = 18
25 ÷ 25 = 1

So, the simplified ratio of miles to gallons is 18 to 1, or 18/1.