Daniel has a collection of stamps worth $6. he has five more 8 cents stamps than 30 cents stamps. the number of 6 cents stamps is twice the number of 30 cents stamps. the number of 5 cents is twelve. how many of each kind of stamps did he have?

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?