Question

A math student goes to an office supply store and purchases a total of 16 spirals and pencils. Each spiral costs $3.50, and each pencil costs $1.25. If the student spent a total of $29, how many pencils did the student purchase?

Answer 1

Based on the information, the number of pencils that the student purchased will be 12 pencils.

Based on the information given, the equation to solve the question will be:

s + p = 16 ....... i

3.50s + 1.25p = 29 ........ ii

From equation i, s = 16 - p.

3.50s + 1.25p = 29

3.50(16 - p) + 1.25p = 29

56 - 3.50p + 1.25p = 29

2.25p = 27

p = 27/2.25 = 12

In conclusion, 12 pencils were bought.

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