1. $1.29 for 20 ounces 2. 200 meters in 32 seconds
Use the DEFINITION OF UNIT RATE: amount of money spent for one unit of weight, or amount of distance run per one second of time, etc. "Unit rate" means "per one unit of measurement."
In other words, 1.29 ÷ by 20 gives _____ $/oz or 200 m ÷ 32 sec gives _____ m/sec.
In short, do DIVISION of one measurement by another kind of measurement, and state the numerical quotient along with the names of the measuring entities (dollars, ounces, miles, hours, etc.)