A man is selling watermelons. The sign says “₱30 a piece or ₱100 for 3 pieces”. Each time, people are buying 3 pieces and pay ₱90. Is the man dumb or a genius? Defend your answer.
A man is selling watermelons. The sign says “₱30 a piece or ₱100 for 3 pieces”. Each time, people are buying 3 pieces and pay ₱90. Is the man dumb or a genius? Defend your answer.