X asked Y if he can borrow his car next week and the former agreed. Is the contact perfected between X and Y? Explain.

A offers to sell his car to B for P200,000. B tells A that he is buying it for P150,000. Is there a contract between A and B? Explain.

A offers to sell B his old laptop for P5,000 and gives B three days to decide whether to buy or not. The next day a sold the laptop to W without informing B. Is A liable for damages? Explain.

On March 1, 2020, A offered to sell his only car to B for P200,000. B accepted the offer by making his letter of acceptance on March 10, 2020. On March 7, 2020, A sold his car to X. On March 15, 2020, A received and read the letter of acceptance. Who has a better right over the car, B or X? Explain?

A sold to B ten bottles of brandy. A delivered the bottles of brandy but two of them were filled with black tea. Can B sue for annulment of the contract with damages? Explain.

X owes huge amount of money to several creditors. To make his property beyond the reach of his creditors, he executed a fictitious sale of his property. What kind of simulation of contract is this? What is the effect?

In what form my a contract appear? State the general rule and exceptions.

G, guardian of M, sold the latter's parcel of land worth P100,000 for only P90,000. Is the contract rescissible? Explain

X orally sold his lot to Y for P500,000 and the latter gave an earnest money in the amount of P50,000 which the former acknowledge in a receipt. Later on, X refused to comply with the contract. Can Y enforce the contract against X? Explain.

On December 1, 2020, A entered into a contract whereby B sold his one year production of eggs in his poultry farm for P50,000. Is the object valid?

X and Y entered into a contract dor smuggling or importation of contraband. What is the status of the contract? Do they have action against each other if one of them does not comply with the contract? What are the effects?

The President declared a state of emergency due to Covid-19 pandemic and the prices of basic commodities are fixed by the government. Suppose you bought kilos of rice and paid an amount beyond that which is fixed by the government, can you recover the excess amount that you paid with the legal interest?