If Romeo can do a job in 3 hrs. and Randy can finish the same job in 6 hrs. How long would it take them to finish
the work?

It would take them two hours to finish.

Step-by-step explanation:

You can think of this in units of work per hour:

Romeo does 1w/3h

Randy does 1w/6h

so we simply need to add them together to find how much work per hour they can do:

So collectively, they can do one job in two hours.

its 4 because 2 times 2 is 4, if you double the number two you get four

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5