SOLUTION: Radical Expression..I need assistance with this please..thanks so much.. If Mary can paint one room in 100 minutes, and Jake can paint one room in 150 minutes, how long will it

Algebra ->  Graphs -> SOLUTION: Radical Expression..I need assistance with this please..thanks so much.. If Mary can paint one room in 100 minutes, and Jake can paint one room in 150 minutes, how long will it       Log On


   

Question 635718: Radical Expression..I need assistance with this please..thanks so much..
If Mary can paint one room in 100 minutes, and Jake can paint one room in 150 minutes, how long will it take if they work together?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

If Mary can paint one room in 100 minutes, and Jake can paint one room in 150 minutes, 

how longhighlight%28x%29  will it take if they work together?

Question states*** PER min Key

 1/100 + 1/150 = 1/x   |Multiplying thru by 300x so as all denominators = 1

 3x + 2x = 300

    5x = 300

     x = 60min or 1 hr together