Answer:
The probability is 3/20
Explanation:
Here, we want to find an experimental probability
The experimental probability that the first slice of pizza sold during lunch tomorrow will be a slice of onion pizza will be;
(number of slices of onion pizza)/(total number of slices)
Total number of slices = (63 + 12 + 1 + 4) = 80
number of slices of onion pizza = 12
So the probability is 12/80 = 3/20