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Chapter 3: Q. 3.3 (page 305)

Guillermo bought textbooks and notebooks at the bookstore. The number of textbooks was 3 more than twice the number of notebooks. He bought 7 textbooks. How many notebooks did he buy?

Short Answer

Expert verified

He bought2 notebooks.

Step by step solution

01

Step 1. Given information.

Consider the given question,

No. of textbooks was 3more than twice the number of notebooks.

No. of textbooks bought is 7.

Assume nto be the no. of notebooks. Then,

role="math" localid="1647074164097" 7=3+2n2n=4n=2

02

Step 2. Check the answer.

Consider the given question,

We know there are 7notebooks which was 3more than twice the number of 2notebooks.

Then,

7=3+227=3+47=7

Hence,LHS=RHSand proved.

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