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1. A motorboat travels 196 meters in 20 seconds. What is the motorboat's unit rate of speed?
Step1. Write equivalent ratios.
The boat's rate of speed is 196m/20 secs.
Let X represent the unknown. The second ratio is: xM/1 sec.
Step2. set up and solve a proportion.
19/20 = X/1
196 . ------------= 20 .-------
--------=---------
X = -------
This can be determined by following writing equal ratios that represent a word problem. Then, the denominator must be divided from the numerator to get the unit rate/ meters per second.
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