A teacher purchased a total of 460 notebooks and pencils. Each notebook cost $1.75 and each pencil cost $0.05. If the teacher spent a total of $218.50, how many notebooks did the teacher purchase?
Answers
The number of notebooks the teacher purchased, is 115
What is the system of linear equations?
A system of linear equations is a collection of one or more linear equations involving the same variables.
Given that, a teacher purchased a total of 460 notebooks and pencils. Each notebook cost $1.75 and each pencil cost $0.05. If the teacher spent a total of $218.50, we need to find the number of notebooks the teacher purchased,
We will use the concept of system of linear equations to solve this,
Let the number of notebooks be n and that of pencils be p,
n + p = 460
p = 460-n....(i)
1.75n + 0.05p = 218.50...(ii)
Using equation (i) in eq(ii)
1.75n + 0.05(460-n) = 218.50
1.75n + 23-0.05n = 218.50
1.7n = 195.5
n = 115
Hence, the number of notebooks the teacher purchased, is 115
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Hi Shawn
-24>-3p+3
First thing we need to do is to change them side (Flip)
-3p+3<-24
Now we need to subtract 3 from both sides
-3p=3-3<-24-3
-3p<-27
Divide both sides by -3 so we can find the value for p
-3p/-3<-27/-3
p>9
I hope that's help ! Please if you have question ask ↓↓↓↓
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Based on the above information, the calculation is as follows:
= -0.6
Learn more: brainly.com/question/1301963?referrer=searchResults
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Step-by-step explanation:
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