The average age of three people running for election is 42 a fourth person joins the race in the average drops to 40 what is the fourth persons age

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Find the value of x. round the length to the nearest tenth

Which is an accurate comparison of the two data sets? the commute to work is typically shorter and more consistent than the commute home. the commute to work is typically shorter but less consistent than the commute home. the commute to work is typically longer and less consistent than the commute home. the commute to work is typically longer but more consistent than the commute home.