Question 474095: A Daily Tripling Salary:
Suppose someone offered you a job for 10 days under the following conditions. You will be paid $5 for the first day, $15 for the second, and $45 for the third, and so on, tripling your previous day's salary each day. How much would you earn altogether?
Found 2 solutions by htmentor, ewatrrr:
Answer by htmentor(1343)   (Show Source):
You can put this solution on YOUR website! A Daily Tripling Salary:
Suppose someone offered you a job for 10 days under the following conditions. You will be paid $5 for the first day, $15 for the second, and $45 for the third, and so on, tripling your previous day's salary each day. How much would you earn altogether?
=================================================
The salary represents a geometric sequence with common ratio 3.
The sum of the 1st n terms of a geometric sequence is
 where r = the common ratio, a1 = the 1st term
So the total salary after the 10th day would be:
This gives S_10 = $147,620
Answer by ewatrrr(24785)  (Show Source):
|
|
|
