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/sci/ - Science & Math

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4644378 No.4644378 [Reply] [Original]

?

>> No.4644382

3.43

>> No.4644393

>>4644382
proof?

I saw this on another board, but am too drunk to figure this out. It's obviously less than 3.5, but I don't know the proof.

>> No.4644397

Six. Fred makes Al his bitch.

>> No.4644401

t/6 + t/8 = 1

>> No.4644403

Twenty-four sevenths of one minute.

>> No.4644408

>>4644401

>unitless time variable

OH SHIT NIGGER, THE FUCK YOU DOIN’?

>> No.4644409

Again?

>> No.4644411

>>4644403
>>4644401
>not posting a proof

>> No.4644415

>>4644411

>not fucking off

>> No.4644420

>>4644378

they forget about washing the car when they suddenly discover they're both gay and spend the rest of the afternoon, and well into the night, blowing each other and packing some fudge...

>> No.4644422
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4644422

>>4644409
bump.

>> No.4644425

It is impossible to fully know the answer to this question, as it is similarly impossible to take into account any interactive effects the two respective car washers would have on each other.

For example, bumping into each other could increase washing time, whereas being able to coordinate each other's efforts together could result in reduced washing time.

But I'm sure all you mathfags took that into account, right?

>> No.4644435

>>4644425
This poster knows what the fuck he's talking about.

>all the other (Anons + pascal !n5Z3VuZapw) getting mad over this

>> No.4644433

>>4644425

No, we took into account the fact that it’s a fucking math problem, where everything is a point-particle in a one-dimensional, frictionless vacuum.

>> No.4644442

Al washes 1/6 cars a minute, Fred 1/8 cars a minute. Both of them washing at the same time is the sum of their car washing rates, so (1/6 + 1/8) cars washed per minute. The reciprocal of that is minutes per car washed.

>> No.4644445

>>4644425
Or if there is a required wait period between layers of wax or something, that time can't be decreased no matter how many washers are involved.

>> No.4644453

>>4644435 doesn't know pascal

>> No.4644454

>>4644425
For example. One washer washes windshields faster when one anon washes hubcaps faster.

Subjective problem is subjective. Anybody thinking they know the answer is an autist separated from objective reality.

>> No.4644469

>>4644378
Al washes at the rate of 1 car per 6 minutes, which is 1/6 of a car per minute. Fred washes at the rate of 1 car per 8 minutes, which is 1/8 of a car per minute. In t minutes, Al washes t times 1/6 cars, and Fred washes t times 1/8 cars, and together they wash t times (1/6 + 1/8) cars. We want to know how long it takes to wash 1 full car, so solve t times (1/6 + 1/8) = 1 car.

>> No.4644476

>>4644425
>>4644435
>>4644445
>>4644454

>overthinking the problem

If these factors were to be considered, they would have been mentioned in or derivable from the information given in the problem.

>> No.4644517

>>4644476

I'm sure your skills at taking into account only the information that was spoon-fed you is useful in psychology or math or whatever you're doing, but in science if you wanna be useful, you gotta take into account that which you DO NOT know.

>> No.4644520

>>4644517
<span class="math"> 3.43 \pm .4[/spoiler]

>> No.4644530

AI washes the car with Fred's blood. Fred is 0

>> No.4644535

I always hate when problems ask how fast something will roll down a hill, and then they don't give us gravity.

>> No.4644542

>>4644517
We know that it is an invented question that someone authored. It is necessarily contrived for the purpose of algebra practice for young students.

>> No.4644552

Silly OP, one can not wash a car together, the cars broke, obviously why it is not together.

>> No.4644576

Hello, welcome to "What the world looks like through an analyicticist". In this episode, we'll examine what statements look like through an analyctical person to solve problems!

>al washes a car in 6 minutes
Assert that user [Al] can process a vehicle [car] in 6 units of time, in which units are in minutes
rate of progression: 1/6 vehicles per minute

>Fred washes the same car in 8 minutes
Assert that user [Fred] can process an equivalent vehicle to [car] in 8 units of time, in which units are in minutes.
rate of progression: 1/8 vehicles per minute

>how long does it take for them to wash the car together?
assert that the rate of progression of the above two users is constant. Combine the rate of progression of the above two users for a virtual single user and find the units of time necessary for this user to process a vehicle equivalent to [car].
1/6 veh/min + 1/8 veh/min = 7 / 24 veh/min.
Virtual user will process at a rate of 7/24 veh/min

1 veh / X = 7 car / 24 min. Find X

X= 24 / 7 minutes

vitual user [Fred + Al] will process vehicle [car] in approx 3.43 minutes.

Thanks for playing!