A pencil at a stationery store costs $1, and a pen costs $1.50. Shawn spent $12 at the store. He bought a total of 9 items. Which system of equations can be used to find the number of pencils (x) and pens (y) he bought?

1.5x + y = 12
x = 9y
x + 1.5y = 12
x + y = 9
x + 9y = 12
x = 1.5y
9x + y = 12
x = 1.5y

Question

A pencil at a stationery store costs $1, and a pen costs $1.50. Shawn spent $12 at the store. He bought a total of 9 items. Which system of equations can be used to find the number of pencils (x) and pens (y) he bought?

 1.5x + y = 12
     x = 9y
 x + 1.5y = 12
     x + y = 9
 x + 9y = 12
     x = 1.5y
 9x + y = 12
     x = 1.5y

anonymous · Answer

The first line is going to be to find the costs. So assign the cost of the pencil to the x and the cost of the pen to the y. The number after the = will be the total he spent.

captainfluffy · Answer

ok... ill try that

captainfluffy · Answer

do i combined 1$ and 1.50$?

anonymous · Answer

Put the 1 to the x and the 1.5 to the y

captainfluffy · Answer

ok

captainfluffy · Answer

its C then?

anonymous · Answer

Why do you think c?

captainfluffy · Answer

cause X=1 and if u have just X it means the same as 1X right? so then that would be the only one

anonymous · Answer

But c has "9y". Which obviously isn't correct.

captainfluffy · Answer

oh i didnt look that far ¯\_(ツ)_/¯

captainfluffy · Answer

its B THEN (ง ͠° ͟ل͜ ͡°)ง

anonymous · Answer

Yeah, it would be B ヽ( ͝° ͜ʖ͡°)ﾉ

captainfluffy · Answer

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anonymous · Answer

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captainfluffy · Answer

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captainfluffy · Answer

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anonymous · Answer

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captainfluffy · Answer

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