If you and a friend get a job painting houses for a summer job. You can paint a room twice as fast as your friend. If you can paint a room in 4 hours, how many hours
would it take for your friend to paint a room alone?

8 hrs

Step-by-step explanation:

4*2=8 i think

Scenario 1: Assume that you paint a room by yourself in four hours.

Then your friend would take eight hours.

Scenario 2: If it took both you and your friend 4 hours to paint a room, then that means that you would have taken approximately 1.3 hours and your friend approximately 2.6 hours to paint that specific room.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

16.80 times .20= 3.36

step-by-step explanation: