An online store receives customer satisfaction ratings between 0 and 100, inclusive. In the first 10 ratings the store received, the average (arithmetic mean) of the ratings was 75. What is the least value
the store can receive for the 11th rating and still be able to have an overage of at least 85 for the first
20 ratings?
Pick a strategy to use and plain why you decided to use
Restate the problem your own words
Look back check your answer or decide if the answer is
reasonable
Do the problem Solve the problem using your strategy