anonymous
  • anonymous
.
Mathematics
chestercat
  • chestercat
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Vocaloid
  • Vocaloid
the equation is x/120 + x/40 = 1, where x is the number of minutes
anonymous
  • anonymous
okay then do i just solve it?
Vocaloid
  • Vocaloid
yeah. if you'd like to get a better understanding of where the numbers come from, you can read this http://algebralab.org/Word/Word.aspx?file=Algebra_WorkingTogether.xml

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Vocaloid
  • Vocaloid
anyway, back to our equation x/120 + x/40 = 1 do you know where to go from here?
anonymous
  • anonymous
do you multiply everything by 120? to get rid of the fraction
Vocaloid
  • Vocaloid
yup!
anonymous
  • anonymous
x+3x=1?
Vocaloid
  • Vocaloid
x + 3x is right check the right side again
anonymous
  • anonymous
x+3x=120 4x=120 x=30 ?
Vocaloid
  • Vocaloid
ah, whoops, I think I made a small mistake w/ the numbers > > should be x/120 + x/80 = 1 (since Tisha builds the box in 80 minutes, not 120)
anonymous
  • anonymous
idk what to do now
anonymous
  • anonymous
can u help me real fast im in school i have to go in a couple minutes
anonymous
  • anonymous
can u just leave the steps for me to see?
Vocaloid
  • Vocaloid
well, we can still multiply to get rid of the fraction x/120 + x/80 = 1 let's multiply by 240 instead of 120 2x + 3x = 240 5x = 240 x = 48 min
anonymous
  • anonymous
k thanks

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