The driving distance between Manchester and London is 195 miles, Faris intends to travel from Manchester to London by coach,
The coach will leave Manchester at 3.30 pm
Faris assumes that the coach will travel at an average speed of 50 mph
a) Using his assumption, work out Faris's arrival time in London,
It actually turns out that the coach has a lower average speed,
b) Describe how this affects the arrival time,

2.12 school absences. data collected at elementary schools in dekalb county, ga suggest that each year roughly 25% of students miss exactly one day of school, 15% miss 2 days, and 28% miss 3 or more days due to sickness.61 (a) what is the probability that a student chosen at random doesn’t miss any days of school due to sickness this year? (b) what is the probability that a student chosen at random misses no more than one day? (c) what is the probability that a student chosen at random misses at least one day? (d) if a parent has two kids at a dekalb county elementary school, what is the probability that neither kid will miss any school? note any assumption you must make to answer this question. (e) if a parent has two kids at a dekalb county elementary school, what is the probability that both kids will miss some school, i. e. at least one day? note any assumption you make.