Question

HELP!!!!

4. Jake can paint a room in 7 hours, and Karen can paint the same room in 5
hours. How long will it take to paint the room if they work together?

Answer 1

It would take them about 3 hours to paint the room together.

Step-by-step explanation:

The least common denominator of 7 and 5 would be 35, so if we set 7x+5x equal to 35, the answer rounds up to 3. (or 2.9 if rounded to the nearest tenth.)

Answer 2

6 hours

Step-by-step explanation:

( 7h + 5h)/2 =6h