Math

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You are currently reading a thread in /sci/ - Science & Math

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help pls

Math 2016-01-18 08:31:24 Post No. 7792674

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Math 2016-01-18 08:31:24 Post No. 7792674

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Help me out /sci/

>240 tickets to a concert

>Expensive ticket cost 200$/each (x)

>Cheap tickets cost 100$/each (y)

a,

x+y = 240 (1)

b,

200x+100y = 33 000 (2)

How many tickets of x,y is there?

pic obvs not related.

>>

Look up diophantine equations and solve for yourself. You fuck

>>

240 - y equals x. Plug into the second equation. Solve for x. Then solve for y

>>

>>7792676

LMAO

>>

>>7792681

k scrub

>>

>>7792679

dind't understand really math teacher sucks to many dics

She has no time to help her students

>>

Can i do this?

200x+100(240-x) = 33 000

>>

>>7792676

It's not even diophantine.

>>

It's pretty simple anon. If we rearrange both equations to find y in terms of x, we can then compare these two forms of y to evaluate x (and plug back in to any of the original equations to solve for x).

y = 240 - x

y = (33000 - 200x)/100 = 330 - 2x

240 - x = 330 - 2x

x = 330 - 240 = 90

y = 150

90 + 150 = 240

200(90) + 100(150) = 33000

Both of these check out.

Now next time pay attention in class and learn for yourself, you will never get anywhere unless you learn for yourself.

>>

>>7792705

yes

>>

>>7792713

Thank you

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