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Mathematics, 22.11.2019 23:31, esmeralda266
Two teachers are grading math homework. one teacher can grade a stack of papers in 50 minutes and the other can complete the job in 100 minutes. how long does it take them to grade all the papers if the first teacher grades alone for 23 minutes, then they work together to finish?
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Mathematics, 21.06.2019 20:20, Kelbee781
Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?
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Mathematics, 21.06.2019 20:30, dbzafgtkiap9wyrl
The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders
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Two teachers are grading math homework. one teacher can grade a stack of papers in 50 minutes and th...
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