tae8002001
15.10.2019 •
Mathematics
David tunes pianos in his spare time for extra income. buyers of his service are willing to pay $135 per tuning. one particular week, david is willing to tune the first piano for $115, the second piano for $125, the third piano for $140, and the fourth piano for $175. assume david is rational in deciding how many pianos to tune. his producer surplus is
a) $-15.
b) $20.
c) $30.
d) $75.
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Ответ:
answer:
c
step-by-step explanation:
i'm 100% sure.
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