12. Compare the length of a quarter (10 weeks) to the length of a semester (15 weeks) in
both absolute and relative terms.
(a) Absolute difference = 5 weeks; Relative difference = 50%
(b) Absolute difference = 5 weeks; Relative difference = 33.3%
(c) Absolute difference = -5 weeks; Relative difference = -50%
(d) Absolute difference = -5 weeks; Relative difference = -33.3%