in a batch of 280 water purifiers, 12 were found to be defective. what is the probability that a water purifier chosen at random
1 answer:
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Answer:
The unit rate in miles per hour = <em>1.4 miles/hr</em>
Step-by-step explanation:
Given that:
Distance walked by Boardman family = Two over five of a mile =
Time taken by Boardman family = Two over seven of an hour =
To find:
The unit rate in the miles per hour = ?
Solution:
Formula for the rate or the speed can be given as:
Putting the values:
So, the unit rate in miles per hour = <em>1.4 miles/hr</em>