need a reinstatement A person hired a firm to build a CB radio tower. The firm charges $100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. That is, the next 10 feet will cost $125; the next 10 fee will cost $150, etc. How much will it cost to build 90-foot tower?
$1800
To calculate the cost of building a 90-foot tower, we need to determine the cost of each section of the tower separately and then sum them up.
Given that the cost of labor for the first 10 feet is $100, we know the cost for this section.
For the additional sections, we can see that each 10-foot section costs $25 more than the preceding 10 feet. So, for the second 10-foot section, the cost will be $100 + $25 = $125.
To find the cost for the third 10-foot section, we add another $25, making it $125 + $25 = $150.
Following this pattern, we can find the cost for the remaining sections.
4th section (30-40 feet): $150 + $25 = $175
5th section (40-50 feet): $175 + $25 = $200
6th section (50-60 feet): $200 + $25 = $225
7th section (60-70 feet): $225 + $25 = $250
8th section (70-80 feet): $250 + $25 = $275
9th section (80-90 feet): $275 + $25 = $300
Finally, we sum up all the individual costs:
$100 + $125 + $150 + $175 + $200 + $225 + $250 + $275 + $300 = $1800
Therefore, it will cost $1800 to build a 90-foot tower.