Jim Whitney Economics 102

Marginal values in economics: examples

Example 1: Consumption and savings Example 2: a firm's total revenue
    DY      C        S
a. 1000   ______   ______
b. 2000   ______   ______
  
DC/DY = MPC = ______
  
DS/DY = MPS = ______
   Q     TR
a. 2   ______
b. 3   ______
   DTR/DQ = MR = ______
   Note: firm demand curve is:
          P = 100 - 10Q
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Example 3: a firm's total cost Example 4: a firm's total output
   Q     TC
a. 1   ______
b. 2   ______
   DTC/DQ = MC = ______
   L     Q
a. 2   ______
b. 3   ______  DQ/DL = MPL3 = ______
c. 4   ______ DQ/DL = MPL4 = ______