Question

chandra can embroider logos on a teams sweatshirts in 6 hr. traci, a new employee needs 9 hours to complete the job. working together how long will it take them to do the job?


I need help setting this up

Answer 1

I know that it's 7.5 hours although I don't know how to show it :/

Answer 2

Use together over alone. Let T be the time they need to do it together. Then\[\frac{ T }{ 6 }+\frac{ T }{ 9 } = 1\]

Answer 3

Now solve.

Answer 4

thanks OakTree :)

Answer 5

No problem.

Answer 6

why is 1 after the equal sign?

Answer 7

That is the accomplishment of one job i.e. "1"

Answer 8

thanks

Answer 9

When you work a problem like this, normally with both working together the time to accomplish the chore should be less than either of the individuals working alone. The answer will be less than 6

Answer 10

thanks Radar

Answer 11

No problem C-Dawg

Answer 12

jillians hot tub can be filled in 10 mins and drained in 8 min how long will it take to empty a full tub if the water is left on

would this be set up the same way?