Concept explainers
To calculate: The rate at which he input the data into computer by noon.
Answer to Problem 50E
The rate at which he input the data into computer by noonis
Explanation of Solution
Given information:
For each half hour he works the rate at which data is input is 2 data items faster. The data input rate is 3 data items per minute when he started to work at
Formula used:
A sequence with first term as
The
Calculation:
Consider the each half hour he works the rate at which data is input is 2 data items faster. The data input rate is 3 data items per minute when he started to work at
The above situation forms an arithmetic sequence as discussed below.
Since he input 3 data items per minute so data items entered in first half an hour are,
So,
Since each half hour he works the rate at which data is input is 2 data items faster.
So,
Between
Recall that
Therefore, number of data inputs till noon is,
So, the rate at which he input the data into computer by noon is,
Thus, the rate at which he input the data into computer by noon is
Chapter 12 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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