SOLUTION: A student is painting a room at a constant rate. She is able to paint 2/5's of the room in 1/2 hour. How long does it take to paint the whole room?

Question 967007: A student is painting a room at a constant rate. She is able to paint 2/5's of the room in 1/2 hour. How long does it take to paint the whole room?

Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52810)   (Show Source): You can put this solution on YOUR website!

If the student paints    of the room in    of the hour, which is 30 minutes, she paints    of the room in = 7.5 minutes.

Hence, it will take 5*7.5 = 37.5 minutes to paint the entire room.

Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

A student is painting a room at a constant rate. She is able to paint 2/5's of the room in 1/2 hour. How long does it take to paint the whole room?

Time taken to paint entire room: 1.25 hours, or hours
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