Ayayai Company exchanged equipment used in its manufacturing operations plus $4,140 in cash for similar equipment used in the operations of Pina Company. The following information pertains to the exchange. Ayayai Co. Pina Co. Equipment (cost) $38,640 $38,640
Accumulated depreciation 26,220 13,800
Fair value of equipment 17,250 21,390
Cash given up 4,140
a) Prepare the journal entries to record the exchange on the books of both companies. Assume that the exchange lacks commercial substance.
b) Prepare the journal entries to record the exchange on the books of both companies. Assume that the exchange has commercial substance.

David consumes two things: gasoline (g) and bread (b). david's utility function is u(g, b) = 10g^0.25 b^0.75. use the lagrange technique to solve for david's optimal choices of gasoline and bread as a function of the price of gasoline, p_g, the price of bread, p_b, and his income m. with recent decrease in the price of gasoline (maybe due to external shock such as shale gas production) does david increase his consumption of gasoline? for david, how does partial differential g/partial differential p_g depend on his income m? that is, how does david's change in gasoline consumption due to an increase in the price of gasoline depend on his income level? to answer these questions, find the cross-partial derivative, |partial differential^2 g/partial differential m partial differential p_g.