Asked by Mary

A newspaper gets 10000 commisson in a particular year, after every he gets 2000 more than preceding year. How long does it take to get 442000

Answers

Answered by oobleck
This is just an AP, with (in thousands)
a = 10
d = 2
Your question is ambiguous.
If you want n where his annual commission is 442K
10 + 2(n-1) >= 442
Since I doubt he'll live that many years, I expect you meant how long till his total commissions are 442K. If so, then
n/2 (20 + 2(n-1)) >= 442
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