Posted by Diana on .
You randomly draw a marble from a bag of 320 marbles. You record its color and replace it. Use the results shown in the table to predict the number of marbles in the bag that are the given color. Blue:10 Green:8 Purple:2

Matt 
PsyDAG,
If this is supposed to indicate the number of marbles directly, then out of every 20, 10 are blue, 8 are green and 2 are purple.
320/20 = 16
Multiply each value by 16.