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math problem work together
- Thread starter Electrons
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hey let me give it a try k?
it takes 2 guys 2 days, so 1 guy will take 4 days... 4 girls 2 days, so 2 girls will take 4 days...
u can use the work formula or use this..I just hate the work formula..
...this is the work formula...1/A + 1/B = 1/T where A is guy, B is girl, T is together... you can fflip around and use a for girl, B or guy if you want..
This is the easier formula...
A*B/(A+B)
4*4/(8) = 16/8 = 2...
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2 girls work = 1 guy work
1 guy + 2 girls =======> 1 guy + 1guy ==> 2 guys work that we know is 2 days.
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Thanks. I think you nailed it. I'm use your easy formula from now on. 🙂
I used to use the
x/A + x/B = 1
It's quick but I usually have a hard time set it up when they spin the words differently.
So you always convert it to 1 of something...then plug in the formula?
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lol as easy as it seems now, but somehow I didn't see it at first glance. Now that you point it out, I can see that with easy number but I still want to know how it is setup so that I can always use it even with not easy numbers. Thanks though.
