Answer:Problem:Aling Cora bought onions and tomatoes. How much change did she receive from a 100 peso bill?Givens: * Price of onions: ₱35.50/kg * Price of tomatoes: ₱21.75/kg * Amount given: ₱100.00Operations: * Addition (to find the total cost of onions and tomatoes) * Subtraction (to find the change)Mathematical Sentence: * Total cost = Price of onions + Price of tomatoes * Change = Amount given - Total costSolution: * Find the total cost: * Total cost = ₱35.50 + ₱21.75 = ₱57.25 * Find the change: * Change = ₱100.00 - ₱57.25 = ₱42.75Answer:Aling Cora received ₱42.75 in change.