anonymous
  • anonymous
Nathaniel can weld a railing in 75 minutes. Brenda can weld a railing 25 minutes faster. If they work together, how many minutes does it take them to weld the railing?
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@Loser66
Loser66
  • Loser66
your idea?
anonymous
  • anonymous
I would do like 1/75+1/25=1/x

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More answers

anonymous
  • anonymous
bcuz 100 min. isn't an answer choice lol
Loser66
  • Loser66
For Nathaniel, he needs 75 min to finish the job. That is in 1 minute, he finishes 1/75 part of the job, right? Same as Brenda with 1/25 so that in 1 minute, both them will finish \(\dfrac{1}{75}+\dfrac{1}{25}= \dfrac{4}{75}\) part of the job. Summary: 1min------------4/75 ? min-----------75/75??
anonymous
  • anonymous
50 ??
Loser66
  • Loser66
nope 75/4 = 72 minutes + 3/4 minutes. That is 72minutes 45seconds
anonymous
  • anonymous
25 minutes 30 minutes 50 minutes 150 minutes
anonymous
  • anonymous
Those are the answers. I have no idea what to do
Loser66
  • Loser66
oh!!@ sorry 75/4 = 18 + 3/4
anonymous
  • anonymous
:) It's okay hahha
Loser66
  • Loser66
But it is just 18 minutes 45seconds which is not one of the options. ha!!
anonymous
  • anonymous
lolll I thought so too! So I guess it would be 25 min.???
Loser66
  • Loser66
I don't guess but don't know what is wrong with the logic. Ok, let's get help @ganeshie8 Please, explain me what is wrong.!!
anonymous
  • anonymous
Lol thank-you :D
ganeshie8
  • ganeshie8
`Nathaniel can weld a railing in 75 minutes. Brenda can weld a railing 25 minutes faster.` That means Brenda can finish the work in `50` minutes right ?
ganeshie8
  • ganeshie8
so we must be solving \[\dfrac{1}{75}+\dfrac{1}{50} = \dfrac{1}{x}\]
Loser66
  • Loser66
YYYYYYYYYYYES
anonymous
  • anonymous
:) I agree. So would it be 50 min.?
anonymous
  • anonymous
Guys?
ganeshie8
  • ganeshie8
what is 50 ?
anonymous
  • anonymous
No idea. Thanks @ganeshie8 and @Loser66 :) !!!!!
Loser66
  • Loser66
hehehehe..... no idea??? That is we are cheated by you??

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