The question below deals with "complete sets" and/or "incomplete sets".
Such questions are suitable for P4 and P5.
Calculator usage is not allowed.
Melons in a supermarket are sold at $3 each.
A basket of 4 melons are sold at $10.
a) What is the most number of melons that can be bought with $50?
b) What is the least amount of money needed to buy 30 melons?
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