Suppose there are four gas stations in your town. The quantity of gas that each one is willing to supply per week at various prices is provided in the accompanying table.

Determine the quantity supplied for the entire market at each price, and graph the market supply curve. Illustrate on your graph what happens to the supply curve when the price rises from $1.20 to $1.60.

Price per litre Station A Station B Station C Station D

$1.60 8,000 5,000 6,000 9,000

$1.40 6,000 4,000 5,000 5,000

$1.20 4,000 3,000 4,000 3,000

$1.00 2,000 2,000 2,000 1,000

$0.80 0 1,000 1,000 0 Learning Objective 3.4 Understand what factors shift supply curves.