Sam walked 102 meters in 30 seconds.
what was sam's rate of speed?
sam's rate of speed was /s .

All we have to do is divide 102 by 30, which gives us 3.4, so Sam's rate of speed was 3.4 meters a second. :)

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

Hope i can you!