Alegbra II math can't apply on Pre-Alegbra

Billwaa

Well, I don't know if this is funny to anyone else, but at least it's funny for me.

I am taking Alegbra II in school and my brother is taking Pre-Alegbra in middle school. So what happened is he got stuck on a problem and want me to help him out, so I did.

The problem is asking If the amount of Dimes and Quarters is the same in a person's wallet and he have x [I forgot how much] money, who much of each does he have.

So what I did is set Dimes a variable and Quarters a variable and try to solve it, like I do with Alegbra II math. I end up with something like 180 = 180

I am like "OMG, like I don't know 180 = 180!" So I redid it with one variable, [I remembered that I only work with one variable in Pre-alegbra] and I finally got the right answer 8.

Took me a total of 10 min to do a Pre-Alegbra problem while it took me less than a min to do a Alegbra II level math. Laughing

Stubru Freak

So what's the point?

You seem to have been wrong at the first one as you have to work towards the right answer and not towards another equality.

And it really takes you 10 minutes to solve something like that?

It's really easy:

dime = 10 cents
quarter = 25 cents
3.5 dollars (for example) = 350 cents

x(10+25) = 350
<=> x(35) = 350
<=> x = 350/35
<=> x = 10

SunburnedCactus

I think the joke is in the lack of intelligence demonstrated.

Billwaa

actually I am trying to say that even though I am most of the time smart (well, before midterm, 2 points alway from getting a perfect 100% in my math grade), sometime, I can be very dumb.

How I solve it eventually is

x = # of quarter
x = # of dimes

.25x + .10x = 2.80
25x + 10x = 280
35x = 280
x = 8

SunburnedCactus

Probably better at maths than me, to be honest. My brain is melting trying to differentiate column vectors.

Blaster