Megan has a bag containing white counters and black counters. There are 20 counters in the bag altogether. The probability of choosing a white counter from the bag is 0.75, How many white counters are in the bag?
If the probatility of choosing a white counter is 0.75, then 75% of the counters are white:
75% of 20 = 0.75 x 20 = 15.
