/sci/ - Science & Math

[Anonymous No.11688101]

Found this in my /b/ folder from several months ago. Is there really no solution or am I just retarded?

[Anonymous No.11688121]

>>11688101
11 = Paul

3 times older than Paul today

[Anonymous No.11688125]

>>11688121
Sorry I meant 11= Phil

[Anonymous No.11688137]

>>11688125
I got that, Phil *then* was 11. When Paul(then) = Phil(now), Phil(then) = 11.

[Anonymous No.11688159]

>>11688101
i’m 80% sure you don’t have enough variables and 100% too lazy to be certain i’m not being dyslexic about it

[Anonymous No.11688173]

>>11688101
22
33 - 22 = 11
22 - 11 = 11
11 * 3 = 33
no clue if the solution is unique but it probably is

[Anonymous No.11688174]

In the current day Phil is 22 and Paul is 33. 11 years ago Phil was 11 and Paul was 22.

So currently Paul is 3 times older than Phil was when Paul was the same age that Phil is today.

[Anonymous No.11688177]

>>11688101
33 - x = x - 11
x = 22

[Anonymous No.11688597]

>>11688101
a= age of paul (now)
b= age of phil (now)
c= age of paul (past)
d= age of phil (past)
>paul is 33
a=33.
>he's three times older than phil was when paul was the same age as phil today
a= 3*d and b=c.
note that a-b = c-d (the age gap doesn't change).
thus b + c = a + d
thus 2b = 4/3 a
thus b= 2/3 a = 22

[Anonymous No.11688611]

>>11688101
x years ago Paul was the same age as Phil is today

33-x = Phil
x = 33-Phil

At that time Phil was older than Paul by

Phil-(33-Phil)-(33-(33-Phil))
Phil-33

So Paul is older than Phil by 3(Phil-33) years

33 = Phil+3(Phil-33)
Phil = 33

[Anonymous No.11688652]

i don't know math but how tf do you guys get 22. Paul was 11 when he was the same age as phil is today. So Phil is 11? or am i retarded

[Anonymous No.11688653]

>>11688611
Sanity check:

Paul is 33 years old. He's 3 times older than his brother Phil was when Paul was the same age Phil is today.

Paul is the same age as Phil is today:

Paul is 33 years old. He's 3 times older than his brother Phil was today.

Phil is older by 0 years today:

Paul is 33 years old. He's 3*0 older.

33 = 33+3*0

So they're twins.

[Anonymous No.11688815]

33+50=83
83-50=33
33/3=11
11+10=20
20+2=2
Phill is 22

[Anonymous No.11689381]

>>11688173
It says Paul is "3 times older," not 3 times as old. It also says "older than his brother Phil was." This means 3 times older than his brother was older, not 3 times older than Phil's was old.

[Anonymous No.11689397]

>>11688174
>>11688177
>>11688597
>>11688611
See >>11689381

[Anonymous No.11689400]

>>11689381
>Paul is three times order than his brother Phil was
it's clearly referring to three times Phil's age

[Anonymous No.11689425]

okay let's see
3x 3 times older
the same age phil is today 33
3x-33=33
x-33=11
x=44
Phil is 44

[Anonymous No.11689436]

>>11689425
>3x-33=33
>x-33=11
>didnt realize something was wrong when Phil turned out older than Paul
beautiful

[Anonymous No.11689454]

>>11689381
Yeah nah that's bullshit

[Anonymous No.11689511]

>>11688101
Phil is a 33yo looser, spending his entire life in front of a computer, living in the basement, complete disgrace to his parents, dad doesn't even talk to him, coming from a hard working day on a factory, feeding his whole family, he doesn't even have the nerves and energy to ''have a talk'', he's too afraid of himself because of the way he's gonna react to his son, he probably won't be able to keep himself in hands, and things gonna escalate to fight, which will bring his wife to tears, and the not very tight remaining bonds of their family will destroy, leading to divorce, nervous breakdown, alcohol, he might loose his job too, so when he imagines all this he just sticks up with routine, casual, cold chat with his wife, when both of them feel the existing drama and don't really care about things they say, but they keep acting, even though they know the tiniest droplet, like the wrong tone, sign of complaining, high bills, anything, can literally burst into a disaster. So they just play the roles, mom cooks, dad quickly eats his meal, (even though he's already been to KFC with his gf, that blowed him at the toilet afterwards, she's dyeing waiting for his divorce), so he eats his meal, leaving half of the food on plate, awkward silence makes him nervous, he says ''tnx hon'', and rushes to tv, where he soon falls asleep on the couch. One day he's going to enter Phil's room.

[Anonymous No.11689524]

I just looked up the answer.
Somebody here said 22 but this one follows a much simpler line of reasoning.
3(33-p) = 33
99 - 3p = 33
99 - 33 = 3p
66 = 3p
p = 66/3
p = 22 yrs is Phil's age

[Anonymous No.11689857]

>>11689400
>it's clearly referring to three times Phil's age
Then it would say 3 times as old, not 3 times older.

[Anonymous No.11689863]

>>11689454
t. ESL

[Anonymous No.11689920]

P=pauls age
H=phils age

P ------ P
H
bring P down to H and you get

P-------
P
H
So P's height is 3x H's new height. But H's new height depends on H's old height, which we don't know. So I doubt there is an answer

[Sage No.11690241]

Paul age then = x1
Paul age now = x2
Phil age then = y1
Phil age now = y2

x2 = 33 (given)
y1 = x2 / 3 = 11 (specified by 1/3 age)
y2 = x1 (specified "when Paul was Phil's age)
x2 - x1 = y2 - y1 (equal passage of time)

DOF analysis: 4 eqns, 4 unknowns. Solvable.

By substitution:
33 - x1 = y2 - 11
33 - x1 = x1 - 11
44 = 2 * x1
x1 = 22

Phil is 22 years old.

[Anonymous No.11690247]

>>11688101
That’s fucking Layton not paul.

[Anonymous No.11690465]

>>11690241
>y1 = x2 / 3 = 11 (specified by 1/3 age)
It says Phil is three times older, not three times as old.

[Anonymous No.11691641]

>>11688101
You know Phil was 11 when Paul was Phil's current age. Also, Phil and Paul have aged an equal number of years. Since neither ages backwards, Paul is the elder brother, so when Phil was 11, Paul's age was between 11 and 33. It is then obvious that because Paul is 33 now, and they aged equal amounts, Phil must be 22 now. To see why, suppose Paul was 21. Then,
21+12=33
But,
11+12=23, not 21.
Or suppose Phil is 23. Then,
23-12=11
But,
33-12=21, not 23.
The answer 22 is also unique.

[Anonymous No.11692241]

>>11691641
>You know Phil was 11 when Paul was Phil's current age.
See >>11690465

[Anonymous No.11692260]

>>11692241
Learn2english.
>Paul is 33. He is three times older than his brother Phil was...
At 33 years old he is three times older than his brother Phil was, so Phil was, 11. Obviously English is not your first language.

[Anonymous No.11692289]

>>11692260
>At 33 years old he is three times older than his brother Phil was, so Phil was, 11.
The times older than his brother's age would mean that his brother was 33/4. Learn the difference between "older" and "as old."

But it doesn't even say that. It says older than his brother was. This means older than his brother was older, not older than his brother was old.

[Anonymous No.11692303]

>>11692260
Wrong.
http://web.augsburg.edu/~schield/MiloPapers/984OfSigCompare3.pdf

[Anonymous No.11692752]

>>11688101
Figure out how to translate this into English and I'll tell you.

[Anonymous No.11692758]

>>11688101
I am dumb. I have negative IQ. When I think about this problem, I start to yawn. I can't hold this in my short-term memory...

[Anonymous No.11693061]

>>11692752
>>11692758
I find it helps if you work backwards.

Paul was the same age as Phil is today. That must be 33-Phil years ago.

So at that time Phil was Phil-(33-Phil) = 2Phil-33 years old

Paul is 3 times older than that age so

33 = 4(2Phil-33)

Phil = 5*33/8 years old

[Anonymous No.11693116]

>>11692289
>>11692303
Autism.

[Anonymous No.11693219]

>>11693116
Retardation.

[Anonymous No.11693228]

>>11693116
>claims someone doesn't understand English
>fails at understanding English

[Anonymous No.11693232]

>>11693219
I'm not the one who can't solve an elementary fucking problem.

[Anonymous No.11693289]

>>11693232
Apparently you are, since you can't even read the problem.

[Anonymous No.11693530]

Paul=P
Phil=p

P=33
33=3p-3x
11=p-x
P-x=p
P-2x=11
33-2x=11
x=11
33-11=p
p=22

[Anonymous No.11694067]

>>11688101
'When Paul blah blah' = x years ago.
33 - x = Paul's age then = Phil's age
33 - Phil's age = x, their age difference
33/3 = 11 = Phil's age then = Paul then - x
Paul then - x = 33 - x - x
11 = 33 - 2x
x = 11
Phil is 22.

[Anonymous No.11694214]

>>11688101

[Anonymous No.11694769]

>>11693530
>>11694067
>>11694214
All wrong. >>11692289

[Anonymous No.11694898]

>>11688101
This isn't even written in proper english so whoever was stupid enough to come up with it probably didn't intend for their to be an answer and instead wanted to watch brainlets argue.