Question

Zelma buys p pounds of bananas for 40 cents per pound. She pays the clerk with a twenty-dollar bill. The clerk subtracts the total cost of the bananas from the twenty-dollar bill to determine the amount of change to give Zelma. Which expression represents the amount of change Zelma should receive?

Answer 1

Answer: C. 20-.40p

Step-by-step explanation:

We know that from the given information that each pound is worth 40 cents, and that its being subtracted from the twenty dollar bill.  

"Why are the others choices wrong?"

A. p-20, isn't the proper equation due to the stated information.

B. B. 20 -40p, this equation has Zelma pay $40 dollars each pound, which isn't correct due to what the text has stated ("for 40 cents per pound").

D. 40p-20, from the given text, this equation is wrong ("She pays the clerk with a twenty-dollar bill), it never states that she will be charged twenty dollars, or be given forty for each pound.

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