Final answer:
There is not enough information given to calculate the total bill for the 3.19 pounds of oranges, 1.15 pounds of grapes, and 2.24 pounds of pears since the cost per pound is not provided.
Step-by-step explanation:
To calculate the total bill for the fruits purchased, we need to know the cost per pound of each fruit, which was not provided in the question. Without the price per pound for oranges, grapes, and pears, we cannot determine the total cost based on their weights alone. Therefore, we do not have enough information to calculate the total bill from the weights of fruits given. The correct approach to answering this type of question would be to multiply the weight of each fruit by its corresponding price per pound, and then add up all the individual costs to get the total bill.