Fast Brain Teaser Question!

[SOSTrooper]

Simon rents a car in the city to go skiing in the mountains 100 kilometres away. He stops halfway to pick up his girlfriend Nina at her house, and drives the remaining 50 kilometres with her. On their way back, Simon drops Nina at her house and drives back to the city alone. He returns the car and pays $50 for the rental and $10 for the gas. Simon and Nina share the expenses equitably. How much should Nina pay?


EDIT: I'll post answer at 10AM PST today....that is if someone didnt explain it already.

 

[Czar]

$15 ?

 

[Omegachi]

half.

 

[Insane3D]

That's tricky...and it depends...

If the total charges for the car and gas were $60, then Nina paid $30...half of the ten for gas and half of the fifity for the rental.


Now, assuming Nina gave him her half of the expenses when he dropped her off, and when he paid $50 for the rental and $10 for the gas, he was only paying his half, then Nina would have paid $60. That would make the tota lfor the rental $100, and the gas $20, making each person owe $60.

Right?

 

[deftron]

She either pays half because she lives halfway between Simon's house and the mountains

or

she pays nothing because he had to go that way anyways (?)

 

[Czar]

if $60 was the total Simon payd but not the total total then Nina's share was $20

 

[Omegachi]

actually simon loses expense +$200 dollars. heres why,

simon lied about Nina being his gf, Nina is actually a prostitute simon picked up on the way. They went "skiing" and came back, Nina charges $100 for an hour, so after 2 hours, Simon dropped her off, and didn't ask her to pay for her ride.

 

[samgau]

Nina doesn't pay a penny cause if she did, simon wouldn't be getting any.... muhahaha...

seriously, I think Nina should pay $28...

 

[GasX]

Originally posted by: Czar
if $60 was the total Simon payd but not the total total then Nina's share was $20

You have obviously never given a girl a ride before....

 

[quirky]

50 / 2 = 25

25 / 2 = 12.5

10 / 2 = 5

5 / 2 = 2.5

12.5+2.5 = $15

assuming many things.. this question isnt very specific

 

[lRageATMl]

Simon automatically has to pay 30 cause he was by himslef half the time.

so for the other 30 bucks he shared with Nina, so 30/2 = 15 <= amount Nina has to pay.

 

[Haircut]

Nina pays $20. She was in the car for 100km, Simon was in the car for 200km.

Thus Simon should pay twice what Nina pays. So Simon pays $40 and NIna pays $20

 

[CPA]

Break it down into segments, 1 for each part of the trip per person = 6 segments ( start -> nina's house = one segment, nina's house -> ski resort = one segment per each rider, etc). $60/6 = 10 per segment = $20 for Nina's share. Or at least that's what I would charge.

 

[Buddhist]

"Nina pays $20. She was in the car for 100km, Simon was in the car for 200km."

Is the correct answer.

total distanced traveled per person. 300km. (200 km for simon, 100km for nina) Thus Simon must pay 2 parts while nina pays 1 part.

Total expense $60 dollars.

60/3= 20

So simon pays 40 bucks while nina pays 20.

 

[radiocore]

25 for the car rental
5 for gas.

30 bucks total?

 

[DanFungus]

maybe she didn't pay in money.....:Q:Q

 

[Keego]

Originally posted by: DanFungus
maybe she didn't pay in money.....:Q:Q

 

[SOSTrooper]

I know many people in this world will simply answer $30 with little thinking. To a certain degree, $30 does seem to make a lot of sense, ONLY if Nina had travelled w/ Simon from X to Y. However, Nina was picked up and dropped off half way from X and Y. Therefore Nina had travelled twice as less as Simon did. So the simple formula would be "Nina should pay twice as less as Simon will pay" Now the last part of the question can be tricky, but it did ask "How much SHOULD Nina pay?" Meaning Nina didnt pay yet, and how much she owes him.

Formula would be:

Simon travelled: 200 miles
Nina travelled: 100 miles
Total from Simon & Nina: 300 miles

Simon + Nina = $60

300/$60 = 100/Z (where Z is actual amount Nina should pay from her 100 miles travelled)

Z = $20

Tada.

GJ to those who got it right (probably piece of cake to you anyway)

 

[Demon-Xanth]

This isn't a math problem, but is more of a problem involving various sociological effects. For example:

Was the guy smart enough to work something out ahead of time?
Was the guy smart enough to pay less?
Was the guy smart enough to score and chock up the $60 as a nookie fee?
Was the guy sneaky enough to pay with his boss's credit card?

 

[mcveigh]

did he get laid?
if he asks her for money can he still get laid in the future?

details are inportant

 

[quirky]

nm

 

[quirky]

actually, it can't be $20. in your explanation you state that nina travelled 100 kilometers, and the total from simon & nina is 300. this is an inaccurate observation, because simon and nina spent 100 miles together in the same car, so they must split that. so actually, the comined number of kilometers they travelled is 200 (simon travelled half the trip by himself, and half of the other half with nina, so in total he travelled 150 km. nina travelled half of half of the trip so thats 50 km, or a quarter. a quarter of $60 is $15)