5 notebooks cost 12.5 dollars. At the same price, how much do 8 notebooks cost?

Answer and explanation

Correct answer: D. 20 dollars

  1. Step 1: One notebook costs 12.5 / 5 = 2.5 dollars. Step 2. 8 notebooks cost 2.5 x 8 = 20 dollars. Answer: 20 dollars. Why not the others: 100 dollars: this multiplies the price of 5 notebooks by 8. 2.5 dollars: this is the price of one notebook. 15.5 dollars: this adds and subtracts instead of using the unit price.

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5 notebooks cost 12.5… | GED Test (High School Equivalency)