Jonah goes to the store to buy three notebooks and four pencils. his total is $8.50. if the cost of one notebook is ten times the cost of one pencil, write and solve an algebraic equation to determine the cost of one notebook and pencil.

Question

Aliyah Simpson

Mathematics

12 April, 10:07

Jonah goes to the store to buy three notebooks and four pencils. his total is $8.50. if the cost of one notebook is ten times the cost of one pencil, write and solve an algebraic equation to determine the cost of one notebook and pencil.

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Answers (1)

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Deangelo Horne · Answer 1

Let x = the cost of a pencil, let 10x=the cost of a notebook

8.50=4x+3 (10x)

8.5=34x

x=.25

A pencil costs $0.25

A notebook costs $2.50 (.25*10)

One notebook and one pencil = $2.75