Sam climbs a rate of 19 meters per hour and Allie climbs at a rate of 22 meters per hour they agree to continue to climb up the rock face for another 1/2 hour than Allie continue to climb 1/2 hour. What rate must Sam climb in the last 1/2 hour to reach the same height as Allie

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)?