An article in the wall street journal notes that although u. s. oil production has increased rapidly in recent years, the increase has still amounted to only 5 percent of world production. still, that increase has been "enough to trigger a price collapse." source: georgi kantchev and bill spindle, "shale-oil producers ready to raise output," wall street journal, may 13, 2015. a small increase in supply can lead to a large decline in equilibrium price when:

Acompany that makes shopping carts for supermarkets and other stores recently purchased some new equipment that reduces the labor content of the jobs needed to produce the shopping carts. prior to buying the new equipment, the company used 6 workers, who produced an average of 79 carts per hour. workers receive $16 per hour, and machine coast was $49 per hour. with the new equipment, it was possible to transfer one of the workers to another department, and equipment cost increased by $11 per hour while output increased by four carts per hour. a) compute the multifactor productivity (mfp) (labor plus equipment) under the prior to buying the new equipment. the mfp (carts/$) = (round to 4 decimal places). b) compute the productivity changes between the prior to and after buying the new equipment. the productivity growth = % (round to 2 decimal places)