Hello, could someone me out with these questions?
it takes 8 hours for one crew to clean an office building. it takes a second crew 10 hours to clean the same building. if the first crew works 2 hours and leaves and the second crew takes over to complete the job, how long will it take the second crew to finish cleaning the building?
two rsm students are standing 20ft apart and spot mrs. rifkin. if they immediately run opposite directions with speeds of 300ft/min and 200ft/min, how many minutes will pass until they are 3,000ft apart?

  1.  7.5 hours

  2.  5.96 minutes

Step-by-step explanation:

1.  In 2 hours, the first crew will have completed 2/8 = 1/4 of the work. The second crew will need 3/4×10 hours = 7.5 hours to complete the work.

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2.  The two students are separating at the rate of (300 + 200) ft/min = 500 ft/min. They will add 2980 ft to their initial 20 ft separation in ...

  2980 ft/(500 ft/min) = 5.96 min

this is a very good question

step-by-step explanation:

i got a hair cut today from my mom not to flex just to flex kim jon un is one rad fellow i'd say you'd need to take the hairline in kinda like a box shape like someone rammed a lego brick into your head. from there you really need to take the top up keeping with that boxy aesthetic, finally coat the whole thing with gel if your country economics are failing or whatever you can just coat it with the starving children's food rations. about 5 orphans per strand is a good ratio. good luck with the fresh cut my dude

the f

last graph i believe

step-by-step explanation:

worked it out i believe