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Re: Two hundred people will attend a university fund-raiser if tickets cos [#permalink]
1
Yes, as it's easy to calculate incremental changes here and intercept isn't useful till demand falls through 50. Once the function is non-linear, there's no way to calculate incremental changes and find solution except for maximum of the function though, IMO.
mnaveed wrote:
Simply check each option
A. 30x200=6000
B. 45x175= 7875
C. 60x150= 9000
D. 75x125= 9375
E. 90x100= 9000

Answer: D


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