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?

Question

asnaseer · Answer

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 · Answer

wait im confused how do u do this problem

asnaseer · Answer

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:$$f+p=7$$

anonymous · Answer

ok

asnaseer · Answer

now, since there are two unknowns here (f and p), we need two equations in order to solve this.

anonymous · Answer

then how do we solve the problem because it says she spent $131

asnaseer · Answer

So, make use of the other piece of information given to you to formulate the second equation

asnaseer · Answer

If Fancy shirts cost $28 and you bought 'f' fancy shirts, then what will be the total cost of fancy shirts?

anonymous · Answer

$28

asnaseer · Answer

$28 is cost of ONE fancy shirt

asnaseer · Answer

so, if you bought 'f' of them, how much would they cost?

anonymous · Answer

r u the tutor

asnaseer · Answer

:) anyone on this site can both teach and/or learn. we do not have specific 'tutors' as such.

asnaseer · Answer

the site is based on mutual learning

asnaseer · Answer

I am actual in fulltime employment as a software engineer. I teach maths as a hobby because I enjoy it. :)

anonymous · Answer

@pinkstick Can you focus on asnaseer's instruction?

asnaseer · Answer

It's ok @Chlorophyll, @pinkstick is a new user, so I assume he/she is curious to know how this site works. :)

anonymous · Answer

which shirts did she bought? 7 Fancy shirts or both?

anonymous · Answer

plain or fancy? or just 7 fancy shirts?