aburchett

02-13-2011, 03:19 PM

A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a lavender marble? If a lavender marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a turquoise marble?

My work: (just need to know if it is correct)

7+11+5=23 marbles in all

7/23 of drawing a lavendar marble

11/23 of drawing a turquoise marble if a lavendar marble is drawn then placed back into the bag

My work: (just need to know if it is correct)

7+11+5=23 marbles in all

7/23 of drawing a lavendar marble

11/23 of drawing a turquoise marble if a lavendar marble is drawn then placed back into the bag