S sold to B a piano for ₱100,000. It was agreed that payment shall be made within ten (10) days. Has B the right to demand delivery even before he has paid?

Based on the given information, we can analyze the situation step by step:

1. S sold a piano to B for ₱100,000.
2. It was agreed that payment would be made within ten (10) days.

Now, let's address the question: Does B have the right to demand delivery before making the payment?

In general, the right to demand delivery before payment depends on the terms and conditions agreed upon by both parties during the sale. If there was no specific agreement regarding the timing of delivery and payment, it is common for the buyer to make the payment first before the seller delivers the item.

However, if there was a specific agreement between S and B that allowed B to demand delivery before making the payment, then B would indeed have the right to do so. It is important to review the terms and conditions of the sale agreement to determine the rights and obligations of both parties.

In summary, without further information about the specific terms and conditions agreed upon by S and B, it is difficult to determine whether B has the right to demand delivery before making the payment.