The price elasticity of supply is equal to the percentage change in the quantity supplied divided by the percentage change in the price. The news clip reports the percentage change in the quantity supplied as a decrease of 17 percent, and the price fell from $2.27 per million Btu to $2.17 per million Btu. Calculate the price elasticity of supply of coal assuming no change in the supply of coal. Is the supply of coal elastic or inelastic