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? Give solutions exactly in reduced fraction form, separated by a comma.

Question

anonymous · Answer

hello prettynikki.  did you try this?

anonymous · Answer

no

anonymous · Answer

how many marbles total?

anonymous · Answer

probability = (favored event)/(sample space)

anonymous · Answer

11

anonymous · Answer

7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles
total is 
$$7+11+5=23$$

anonymous · Answer

total is 23, number of lavender marbles is7, probability of getting a lavender one if you pick at random is the ratio of lavender to total
$$\frac{7}{23}$$