MATH PUZZLE #2

avatar for rattdog
rattdog
New York
it's a long day at work and lunch time hasn't even arrived yet.

i posted one of these puzzles several months ago so i figured why not now for #2. this one popped up on the youtube site. it's a cool one. anyway here goes:

alice and bob can complete a job in 2 hours

alice and charlie can complete the same job in 3 hours

charlie and bob can complete a job in 4 hours

how long would the job take to be completed if all 3 worked together?

9 comments

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avatar for minnow
minnow
a year ago
Alice is the star, Charlie and Bob are the slackers who scratch their nuts too much.
avatar for mark94
mark94
a year ago
A = one hour of Alice work

2A + 2B = X
3A+ 3C = X
4B + 4C = X

A= X/2 - B
A= X/3 - C
C= X/4 - B

A= X/3 - X/4 + B
A= X/3 - X/4 + x/2 -A

2A = x/3 -X/4 + X/2

4X - 3X + 6X = 24A

7X = 24 A

Alice accomplishes 7/24 of the task each hour

Etc



avatar for rickthelion
rickthelion
a year ago
^
Mark ape, you spent far too much time on this and missed the point.

How long would it take Alice, Bob, and Charlie to complete a job? Simple, the job in question will never be completed. Let’s assume Alice is a sexy female hairless ape who is amazingly horny. She will engage in a three way with Bob and Charlie so maybe a few blow jobs will be completed, but eventually Bob and Charlie will cross swords and freak out leaving poor Alice to masturbate on her own. That’s when the ricks will swoop in and take care of her. ROAR!!!
avatar for mark94
mark94
a year ago
A accomplishes 7/24 of the task each hour
B accomplishes 5/24 of the task each hour
C accomplishes 1/24 of the task each hour

Working together, they accomplish 13/24 of the task per hour

It takes 1 hour and 11/24 hour ( 27.5 minutes )
avatar for mark94
mark94
a year ago
Correction 1 hour and 11/13 hours (1 hour 50 minutes)
avatar for misterorange
misterorange
a year ago
I got frustrated, looked it up online, kept my mouth shut so as not to spoil it, and now I can't remember the answer.
avatar for etsutwigg222
etsutwigg222
a year ago
8 hours. Alice is tied up blowing & banging Charlie & Bob, so gets no work done. Charlie has taken Viagra, can go for multiple hours with multiple pops. Bomb blows his load in 15 minutes with 6 hours recovery time, so he is the only doing the work.
avatar for motorhead
motorhead
a year ago
Assuming Alice is a stripper, it will never get painted
avatar for jaybud999
jaybud999
a year ago
Charlie takes longer to pop, so Alice's mouth needs to be on him (with eye contact), while Bob can clearly pop faster....so he gets the non dominant hand and an occasional moan. Same amount of time unless a) Alice puts on an outfit to Charlie's liking, b) Charlie hits that V to pregame.
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