Question

what are different ways to write d=r+t

Answer 1

You can write this formula in two other ways, to solve for distance (d = rt) or time (t = d/r).

Examples

Let's say you rode your bike 2 hours and traveled 24 miles. What is your rate of speed? Use the formula r = d/t. Your rate is 24 miles divided by 2 hours, so:

r = 24 miles ÷ 2 hours = 12 miles per hour.

Now let's say you rode your bike at a rate of 10 miles per hour for 4 hours. How many miles did you travel? This time, use the distance formula d = rt:

d = 10 miles per hour × 4 hours = 40 miles.

Next, you ride 18 miles and travel at a rate of 12 miles per hour. How long did this take you? Use the time formula t = d/r:

t = 18 miles ÷ 12 miles per hour = 1.5 hours, or 1 ½ hours.

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