how to attack word problems...

Storm2529

New member
Joined
Nov 3, 2008
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7
They want you to solve the word problem and I only now the first step. The question is :
The sum of five times a number and two times the number is 161. Find the number.
all I could figure out was 5x + 2x = 161. I don't now the rest. Please help.
 

Mrspi

Senior Member
Joined
Dec 17, 2005
Messages
2,128
Storm2529 said:
They want you to solve the word problem and I only now the first step. The question is :
The sum of five times a number and two times the number is 161. Find the number.
all I could figure out was 5x + 2x = 161. I don't now the rest. Please help.

Ok...

let x = the number

You know that "the sum of 5 times the number and two times the number is 161"

Your equation is correct:

5x + 2x = 161

Are you saying that you don't know how to solve this equation?

We need to know where you are stuck. If solving 5x + 2x = 161 is a mystery, you probably need to talk to your teacher and ask for some extra help.
 

Storm2529

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Nov 3, 2008
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7
They want you to find what the problem is and what x is and then check it.
 

Denis

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Feb 17, 2004
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1,465
Storm2529 said:
They want you to find what the problem is and what x is and then check it.
Are you saying you can't solve 5x + 2x = 161 for x?

OK: if 5 videogames + 2 videogames cost $161, and all videogames cost the same,
how much does 1 videogame cost? Can you tell us that?
 

Storm2529

New member
Joined
Nov 3, 2008
Messages
7
No, they want you to combine like terms and then solve for x. I know now what the next step is.

5x + 2x = 161
7x=161

That is all I have so far. :(
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,465
Storm2529 said:
No, they want you to combine like terms and then solve for x. I know now what the next step is.
5x + 2x = 161
7x=161
That is all I have so far. :(
C'mon Stormy; ok: if 7 videogames cost $161, how much does 1 videogame cost?
 
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