Bob and bob no.2 are on their bikes and start 90miles apart on a road riding towards each other. bob is traveling at 10mph and bob no.2 is traveling at 20mph they both move at constant speeds until they meet.
work out what distance each rider has cycled by the time they meet?

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?