anonymous
  • anonymous
word problem: Kristin spent $131 on shirts.Fancy shirts cost $28 and plain shirts cost $15.If she bought a total of 7 then how many of each kind did she buy?
Mathematics
jamiebookeater
  • jamiebookeater
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asnaseer
  • asnaseer
Start off by defining some variables. So lets set f = number of fancy shirts bought and lets set p = number of plain shirts bought Can you formulate some equations using these symbols?
anonymous
  • anonymous
wait im confused how do u do this problem
asnaseer
  • asnaseer
e.g. you are told that the total umber of shirts bought is 7. So if you bought 'f' fancy ones, and 'p' plain ones, then we can say that:\[f+p=7\]

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anonymous
  • anonymous
ok
asnaseer
  • asnaseer
now, since there are two unknowns here (f and p), we need two equations in order to solve this.
anonymous
  • anonymous
then how do we solve the problem because it says she spent $131
asnaseer
  • asnaseer
So, make use of the other piece of information given to you to formulate the second equation
asnaseer
  • asnaseer
If Fancy shirts cost $28 and you bought 'f' fancy shirts, then what will be the total cost of fancy shirts?
anonymous
  • anonymous
$28
asnaseer
  • asnaseer
$28 is cost of ONE fancy shirt
asnaseer
  • asnaseer
so, if you bought 'f' of them, how much would they cost?
anonymous
  • anonymous
r u the tutor
asnaseer
  • asnaseer
:) anyone on this site can both teach and/or learn. we do not have specific 'tutors' as such.
asnaseer
  • asnaseer
the site is based on mutual learning
asnaseer
  • asnaseer
I am actual in fulltime employment as a software engineer. I teach maths as a hobby because I enjoy it. :)
anonymous
  • anonymous
@pinkstick Can you focus on asnaseer's instruction?
asnaseer
  • asnaseer
It's ok @Chlorophyll, @pinkstick is a new user, so I assume he/she is curious to know how this site works. :)
anonymous
  • anonymous
which shirts did she bought? 7 Fancy shirts or both?
anonymous
  • anonymous
plain or fancy? or just 7 fancy shirts?

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