1. A team of basketball players went to a store to buy shoes and out of the 10 members, 5 of them were able to choose the shoes. They agreed to pay the price upon delivery. The other four members were able to choose but the shoes were not available at that time but they are normally manufactures. The last member could not find shoes that could fit his 16 inches feet and therefore, he has to order for such kind of shoes. What transactions were entered into by each players?

2. A obliged himself to deliver a determinate car with a market value of Php.250,000.00. While B obliged himself to deliver his watch and Php.150,000.00 in cash. What kind of contract do A and B entered into?

3. Emma the owner of a house and lot in Santiago City, gave an option to Georgia to purchase said property for Php.100,000.00 within ninety days from May 1, 2013. Georgia gave Emma one peso (Php.1.00) as option money. Before the expiration of the 90-day period, Georgia went to Emma to exercise her option and to pay the purchase price but Emma refused because somebody wanted to buy her property for Php.150,000.00 and because there was no sufficient consideration for the option. Georgia sued Emma to compel her to accept payment and execute a deed of Sale in her favor. Decide the case.

4a. Adrian sell his car to Butoy, a compadre. If Adrian and Butoy fix the price at Php.500,000.00 payable in installment, secured by a chattel mortgage on the car and a real estate mortgage by Carlo, upon foreclosure of the chattel mortgage, may Adrian foreclose the real estate mortgage for the unpaid balance? Explain.

4b. Suppose in the problem above, Danny, a friend of Butoy, executed a promissory note, binding himself to pay in case of deficiency. Can Adrian demand from Danny the payment of said deficiency? Why?

5. May it be stipulated that in a foreclosure of the chattel mortgage to secure the purchase of a car on installment, the installments paid will not be refunded? Explain.