Find the "unit cost." Divide the total price paid by the number of units sold:
$p
------------ = $(p/8) / lamp
8 lamps
The unit cost is p/8 dollars per lamp.
Actually, DIEDERICK drove faster than BROOK. What you can do to find out the answer, is divide. Brook drove 180 miles in 3 hours, so divide 180 by 3, and you get 60. If you divide 160 by 4, you get 40. So, that means that Diederick drove faster than Brook.
The outlier is 100- it will raise the mean and shift the median
