Answer
We know that $probability=\frac{\text{number of favorable outcomes}}{\text{number of all outcomes}}$
a) The number of good outcomes is $12$. The number of all outcomes is $12+88=100$ Hence the probability here is: $\frac{12}{100}$
b) The number of good outcomes is $12$. The number of all outcomes is $12+16=28$ Hence the probability here is: $\frac{12}{28}$
c) The number of good outcomes is $34$. The number of all outcomes is $88+34=122$ Hence the probability here is: $\frac{34}{122}$
Work Step by Step
We know that $probability=\frac{\text{number of favorable outcomes}}{\text{number of all outcomes}}$
a) The number of good outcomes is $12$. The number of all outcomes is $12+88=100$ Hence the probability here is: $\frac{12}{100}$
b) The number of good outcomes is $12$. The number of all outcomes is $12+16=28$ Hence the probability here is: $\frac{12}{28}$
c) The number of good outcomes is $34$. The number of all outcomes is $88+34=122$ Hence the probability here is: $\frac{34}{122}$
