The number of lattes sold daily by two coffee shops is shown in the table. Shop A Shop B 55 45 52 42 56 57 48 48 57 11 30 10 45
1 answer:
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Using the together rate, it is found that it would take the assistant 31 hours and 30 minutes to do it alone.
<h3>What is the together rate?</h3>It is the sum of each separate rate.
In this problem, the rates are given as follows:
- Josephine: 1/9.
- Assistant: 1/x.
- Together: 1/7.
Hence:
2x = 63
x = 31.5.
It would take the assistant 31 hours and 30 minutes to do it alone.
More can be learned about the together rate at brainly.com/question/25159431
Solution:
Given:
when a = 4, substitute for a in the expression;
Therefore, if (a = 4), then
Hence, the answer is 16.