anonymous
  • anonymous
Mark bought a notebook for $1.45 and some pencils. The pencils cost $0.42 each. The total cost of the notebook and pencils was $6.91. How many pencils did Mark buy? a.12 b.13 c.14 d.15
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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mortonsalt
  • mortonsalt
Let the number of pencils he bought be x. cost of notebooks + cost of pencils = cost of notebooks and pencils Remember that he only bought "a" notebook. Now think about this: If I have bought an unknown number of candies for $2 and each candy was $1, how many candies did I buy? The answer is 2. Same goes with the pencils. If you buy x pencils for 0.42 each, then the total cost he spent on the PENCILS is 0.42x. Plug it back to the equation 1 above, and you should get the answer.

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