SOLUTION: Architect Cristobal made P35,000 during the first year of his job. Each year, he received a 20% raise. What were his total earnings during the first ten years on the job.

Question 1186945: Architect Cristobal made P35,000 during the first year of his job. Each year, he received a 20% raise. What were his total earnings during the first ten years on the job.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
a(r^n-1)/(r-1) is the sum of a geometric series, and r here is 1.2 with n 10
so a(1.2^10)-1)(0.2)=25.958a
rounding at the end the amount is P908,553.87
the sum
35000
42000
50400
60480
72576
87091.2
104509.44
125411.33
150493.59
180592.31

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