If 7people are to answer the call, they must work at the rate of 12.85 calls per hour
A rate is a ratio that compares two different quantities which have different units. For example, if we say John types 50 words in a minute, then his rate of typing is 50 words per minute.
The total calls available for an hour is 14×5 = 90 calls per hour
if 7 people are answering call , the the rate of calls per person is 90/7 = 12.85 calls per hour
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