4 notebooks cost 6 dollars. At the same price, how much do 10 notebooks cost?

Answer and explanation

Correct answer: C. 15 dollars

  1. Step 1: One notebook costs 6 / 4 = 1.5 dollars. Step 2. 10 notebooks cost 1.5 x 10 = 15 dollars. Answer: 15 dollars. Why not the others: 60 dollars: this multiplies the price of 4 notebooks by 10. 1.5 dollars: this is the price of one notebook. 12 dollars: this adds and subtracts instead of using the unit price.

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4 notebooks cost 6… | GED Test (High School Equivalency)