Question
PSLE
A tart costs $1.20 in Bakery Q. For every 3 tarts a customer buys, he can buy the fourth one at half the price. What is the greatest number of tarts that a customer can buy with $15?
3 m

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PSLE
A tart costs $1.20 in Bakery Q. For every 3 tarts a customer buys, he can buy the fourth one at half the price. What is the greatest number of tarts that a customer can buy with $15?