Ah, those formulas made my head spin in school, hajur! Honestly, I never truly calculated it—I just watched. When I tried a small price hike for threading, my regulars still came, spending the same total, so demand wasn’t elastic for them. But for a new haircut style? A higher price meant empty chairs. The real math was seeing whose total spending in my little book stayed steady or vanished. My ledger taught me more than any textbook ever did. 😅
#exams#study
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