So...

(4/6)m > (5/6)l
m > (5/4)l

Which means Marty's pizza is more than one and a quarter the size of Luis' pizza. We can comfortably just compare the area, since we can assume a flat disk with equal height for a pizza.

Assuming Luis' pizza is a Domino's Classic size of 25cm that's an area of:

(25cm / 2)² * π = (625cm² / 4) * π = 490.874cm²

So Marty's pizza should be more than 490.874cm² * 1.25 = 613.5925cm² for 4/6 of his to be greater than of 5/6 of Luis', so:

sqrt(613.5925cm² / π) * 2 = 13.975426964cm * 2 = 27.950853929cm

Since Marty's pizza is greater, let's go with 28cm diameter... which happens to match exactly a Domino's Medium size.

That's a very realistic scenario and the teacher is an absolute idiot for not understanding.

There's nothing wrong with the answer.

I can't find it now and I do not think it really applies here. But someone stated that being high IQ could lead to academic problems as the high IQ learner would understand or see things that the professor could not causing the professor to mark it as incorrect.

I guess this is the idiocracy version of it.

Math education in the empire is TERRIBLE. There is no actual math taught. At best it's applied analogies like this pizza BS. The teachers have never taken any advanced math so they don't even know what they're not teaching. The goals (eg. calculus) are completely worthless. The entire system is stuck in the 1700s. It's a complete failure. It's intentional too. The goal is creating obedient, little computers not critical thinkers. That would be a threat to the system. This image is just the tiniest tip of the iceberg.

Ah, a teacher that does not comprehend the barometer

Two other right answers:

• Luis' pizza is at least smaller than Marty's (which is basically the same answer as the kid's)
• Marty ate someone else's pizza besides his own

And, for funsies:

• Luis' pizza is 50% crust, so it doesn't fully count as pizza
• Luis doesn't like pizza and actually fed the dog while nobody was looking
• Marty is many years older than Luis, therefore he has eaten many years' worth of pizza ahead of Luis

Commendable for the kid to be thinking outside of the box, and a bit shitty of the teacher for not giving them maybe half a point (because it's a correct answer, but not the correct/expected answer). The test maker is also to blame - they should've taken care to eliminate all ambiguity - it's a math test after all.

lol this is actually a golden answer and that is why we need better teachers

Your fault for not listing the size and list of toppings for both pizzas, one could be a small personal pizza size with just cheese and pepperoni and the other a full huge New Yorker sized one with double of everything.

that kid passes my class with honors

the teacher is a moron

In my experience this is how it feels to communicate as an autistic person

Marty's pizza is larger. 4/6ths of a 3kg pizza is more than 5/6ths of a 1kg pizza

The statement and question make perfect sense. The kid has the only "reasonable" answer.

The equivalent of whats going on in the teacher’s head.

This is genuinely baffling. What was that teacher on.

I have an argument like that in my calculus 1 class in college, it was an optimization problem but the professor never said that the optimization variable was a constant, so you couldn't differentiate it to zero and do the normal process that you typically do. So I just wrote that given that the perimeter wasn't a constant the area to optimize goes to infinite Givin x -> inf; y -> 0, without loss of generality. He marked me zero we discussed about it and I said that I don't care because I'm going to get a 10 next test if he didn't fucked up the question. At the next exam I made some stupid error but he still gave 9/10 for the overall class because he came to accept that he wrote the question wrong and I was the only in the class actually caring and giving the class some dedication.

it's fairly clear there are two pizzas, but as to 'how' someone eats more than someone else... this is not really a simple math question, there are too many unknown variables. Maybe one has Bulemia, maybe one of them is 6'9" and has a much bigger appetite. Maybe one of the people has a congenital deformity resulting in two mouths... This question is not a math question, it's an exercise in creativity.