16.9 The cost of college. The part of the CPI that measures the cost of college tuition (1982–84 = 100) was 796.2 in July 2015. The overall CPI was 238.7 that month.
(a) Explain exactly what the index number 796.2 tells us about the rise in college tuition between the base period and July 2015.
(b) College tuition has risen much faster than consumer prices in general. How do you know this?