[arithmetic lesson related]
A firm that builds a radio tower charges Php 5000 for the first 10 feet. After
that, the cost of the labor for each succeeding 10 feet is Php 1,000 more than
the preceding 10 feet. That is the next 10 feet will cost Php 6, 000, the next 10
feet will cost Php 7, 000 etc. How much will it cost to build a 90 – foot tower?
Answers
Answered by
1
sorry don't know but pls follow me and mark me as brainliest
Answered by
3
Answer:
Step-by-step explanation:
Just simply use the formula of sum of all terms:
where d=1000
S = n/2 [2a1 + (n-1) (d)]
S = 9/2 [2(5000) + (9-1)(1000)]
S = 81,000
Similar questions