Posted by David on Friday, October 21, 2011 at 5:47pm.
Solve for x.
14 + 18.75 + x + 4 = 43
36.75 + x = 43
x = 43 - 36.75
x = ?
Why do you add the $4? My daughter missed this on a homework sheet because she didn't use the $4. Why should that even be considered?
We're trying to find out how much she spent for lunch. We can account for the rest of the money.
Another way to work this problem is:
14 + 18.75 + x = 43 - 4
You'll get the same answer.
Thanks, but that still makes no sense.
If she SPENT a TOTAL of $43 which included $14 for socks and $18.75 for a wallet and had $4 LEFT, Why does the $4 even have to be in the equation?
$43= $14 + $18.75 + LUNCH (X)
I see your point. The question states that she SPENT $43. I suggest you have your daughter ask her teacher.
The $4 only enters the picture if asked ,
"how much money did she start with"
14 + 18.75 + lunch = 43
lunch = 43 - 14 - 18.75 = 10.25
So her lunch cost $10.25
She started with 43+4 or $47
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