anonymous
  • anonymous
A village fair offers three throws for $1 and seven throws for $2. If with 187 throws $57 is made, how many people bought three throws
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
we need a variable for either the $1 throws or the $2 throws so we can solve this for one of them which one do you pick and what variable?
anonymous
  • anonymous
could it be x and y
anonymous
  • anonymous
you want to use two variables that is find also unnecessary but fine

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anonymous
  • anonymous
ok that was wrong how can 187 throws bring in only $57?
anonymous
  • anonymous
oooh i got that totally wrong doh sorry
anonymous
  • anonymous
if you only use one variable how would that turn out
anonymous
  • anonymous
lets see if we can do it this way first
anonymous
  • anonymous
the total is 187 so \[x+y=187\]
anonymous
  • anonymous
and also \[\frac{x}{3}+\frac{2y}{7}=57\]
anonymous
  • anonymous
you can solve that for \(x\) and \(y\) probably easier to multiply the second equation by 21 and start with \[x+y=87\\ 7x+6y=1179\]
anonymous
  • anonymous
i get \(x=657\) but that is the number of throw, not the number of people the number of people would be one third of that, since they got three throws each
anonymous
  • anonymous
it says the number of people is suppose to be 25
anonymous
  • anonymous
really? guess i screwed that one up
anonymous
  • anonymous
let me see if i can unscrew it if x is the number of people with 3 throws and y with 7 then maybe we should have \[3x+7y=187\]
anonymous
  • anonymous
and also \[x+2y=57\]
anonymous
  • anonymous
seems to work nicely, get \(x=25,y=16\)

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