11. clayton walks his dog every day. they walk by the river five days a week, and they walk around
the block two days a week. when they walk by the river, they see other dogs 76% of the time. when
they walk around the block, they see other dogs 31% of the time.
a) draw a tree diagram to represent this situation. (2 marks)
b) determine the probability that clayton and his dog will see another dog on their next walk. (2
marks)