Final answer:
The number of pineapples sold was 36, which is 12 fewer than the 48 bananas sold. Therefore, the ratio of pineapples to bananas is 3:4, which corresponds to answer option (c).
Step-by-step explanation:
Nora's fruit stand sold 12 fewer pineapples than bananas last week. If the stand sold 48 bananas, then the number of pineapples sold would be 48 bananas - 12 pineapples = 36 pineapples. To find the correct ratio of pineapples to bananas, divide the number of pineapples by the number of bananas.
The calculation will be 36 pineapples / 48 bananas = 0.75. When expressed as a ratio, this is equivalent to 3/4 or 3:4. Therefore, the correct ratio of the number of pineapples to the number of bananas sold is 3:4, making the answer (c) 3:4.