Yahoo Answers: Answers and Comments for Marlo dug a ditch in 30 minutes Maricris, can dig same size ditch in 1 hour. Working together, how long will it take them to dig the ditch? [Homework Help]
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From Jessica
enGB
Fri, 19 Oct 2018 21:29:53 +0000
3
Yahoo Answers: Answers and Comments for Marlo dug a ditch in 30 minutes Maricris, can dig same size ditch in 1 hour. Working together, how long will it take them to dig the ditch? [Homework Help]
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From Anonymous: as marlo cannot work faster it will take both ...
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Sat, 20 Oct 2018 03:13:27 +0000
as marlo cannot work faster it will take both 30 minutes. it is a trick question which other answers fell for

From Anonymous: A problem involving work can be solved using t...
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Fri, 19 Oct 2018 22:37:58 +0000
A problem involving work can be solved using the formula Work Formula, T/A + T/B = 1 where T = time working together, A = the time for person A working alone, and B = the time for person B working alone.
Step 2: Solve the equation created in the first step. This can be done by first multiplying the entire problem by the common denominator and then solving the resulting equation.
Step 3: Answer the question asked of you in the problem and be sure to include units with your answer.
T/30 + T/60 = 1
60(T/30 + T/60 = 1)
60T/30 + 60T/60 = 60
2T + T = 60
3T = 60
T = 20 minutes

From Anonymous: One hour, two people work slower and take more...
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Fri, 19 Oct 2018 22:22:36 +0000
One hour, two people work slower and take more breaks

From Krishnamurthy: Mario does 1/30 of the ditch in a minute.
Mar...
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Sat, 20 Oct 2018 10:27:40 +0000
Mario does 1/30 of the ditch in a minute.
Maricris does 1/60 of the ditch in a minute.
Let t = time in minutes
t(1/30) + t(1/60) = 1
t/30 + t/60 = 1
2t/60 + t/60 = 1
3t = 60
t = 20 minutes
Working together, it will take them 20 minutes to dig the ditch.

From SumDude: 3 hours. They will always be getting in each ...
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Sat, 20 Oct 2018 04:36:26 +0000
3 hours. They will always be getting in each other's way and on each other's nerves.

From Laurie: Mario does 1/30 of the ditch in a minute.
Mari...
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Fri, 19 Oct 2018 23:59:16 +0000
Mario does 1/30 of the ditch in a minute.
Maricris does 1/60 of the ditch in a minute.
Let t = time in minutes
t(1/30) + t(1/60) = 1
t/30 + t/60 = 1
2t/60 + t/60 = 1
3t = 60
t = 20 minutes

From j.: Marlo digs 1/30 of a ditch in 1 minute.
Mari...
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Fri, 19 Oct 2018 22:23:27 +0000
Marlo digs 1/30 of a ditch in 1 minute.
Maricris digs 1/60 of a ditch in 1 minute.
So every minute combined, they dig 1/30 + 1/60 of a ditch. 1/30 is the same as 2/60, so
2/60 + 1/60 = 3/60 of a ditch per minute.
That reduces to 1/20, so they dig 1/20 of a ditch per minute.
That means it takes them 20 minutes to dig the whole ditch. Done.

From Anonymous: 22.5? I moved you over to mathematics for bett...
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Fri, 19 Oct 2018 21:59:33 +0000
22.5? I moved you over to mathematics for better answers

From Elaine M: How long is the ditch? Did both work on the sa...
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Fri, 19 Oct 2018 21:44:17 +0000
How long is the ditch? Did both work on the same size?